2641 . The angels of a triangle are in the ratio 2:3:4. What is the value of the largest angle in the triangle ?

A. 90
B. 80
C. 60
D. 180

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Answer: Option B

Explanation:

Total portion=2+3+4=8

So, 1 portion is=190/8=20

So, the largest angle=20×4=80

(ans).

2642 . The angle between the minute hand and the hour hand of a clock when the time is 8.30, is :

A. 80 degree
B. 75 degree
C. 60 degree
D. 105 degree

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Answer: Option B

Explanation:

2643 . The angle between the minute hand and the hour hand of the clock when the time is 4.20 is:

A. 0°
B. 10°
C. 5°
D. 20°

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Answer: Option B

Explanation:

At 4:20, the minute hand is on the 4, and the hour hand is 20/60 = 1/3 of the way from the 4 to the 5. Since the numbers on the clock are 360/12 = 30 degrees apart, the smallest positive angle between the hands at 4:20 is 30(4 1/3 - 4) = 30(1/3) = 10 degrees.

2644 . The angle measure of the base angles of an isosceles triangle are represented by x and the vertex angle is 3x + 10. Find the measure of base angle.

A. 112°
B. 42.5°
C. 34°
D. 16°

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Answer: Option C

Explanation:

Here,

X+X+3X+10= 180 ( Isosceles Means= সমদ্বি)

or, 5X= 170

or, X= 170/5= 34

সহকারী পরিচালক(AD) -12.11.2021

A. 2.3 m
B. 9.2 m
C. 4.6 m
D. 7.8 m

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Answer: Option B

Explanation:

Let AB be the wall and BC be the ladder.
Height and Distance mcq solution image
Then, ∠ACB = 60° = AC = 4.6m
ACBC = cos60∘ = 12
⇒ BC = 2 × AC = 2 × 4.6 = 9.2m

সমন্বিত পাঁচ ব্যাংক || অফিসার ক্যাশ - 06.11.2021

A. Tk 8800
B. Tk6800
C. Tk 4800
D. Tk 4400
E. None of these

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Answer: Option E

Explanation:

Let, length = 68 m

and width = 10m

So, area = 10×68 = 680

Cost of fencing = ( 10×2×50) + ( 68×2×50) = Tk.7800 ( correct answer)

2647 . The area of a rectangle is 200 sq. meter . If the length is twice the breadth , what is the perimeter of the rectangle ?

A. 40
B. 50
C. 60
D. None of these

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Answer: Option C

Explanation:

Let L be the length and B be the breadth.

So, L x B = 200

or, 2B x B = 200

or, B2 = 100

or, B = 10

So, L = 2B = 2 x 10 = 20

Therefore, the perimeter of the rectangle = 2 (L + B) = 2 (20 + 10) = 2 x 30 = 60.

Bangladesh Bank - Assistant Director - 2001

A. 60
B. 30
C. 40
D. 50

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Answer: Option A

Explanation:

Let L be the length and B be the breadth.

So, L x B = 200

or, 2B x B = 200

or, B2 = 100

or, B = 10

So, L = 2B = 2 x 10 = 20

Therefore, the perimeter of the rectangle = 2 (L + B) = 2 (20 + 10) = 2 x 30 = 60.

2649 . The area of a rectangle is 460 square meters. If the length is 15% more than the breadth, what is the breadth of the rectangular field?

A. 15 meters
B. 26 meters
C. 34.5 meters
D. None of these

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Answer: Option D

Explanation:

2650 . The area of a rectangle R with width 4 feet is equal to the area of a square S, which has a perimeter of 24 feet. The perimeter of the rectangle R, in feet, is :

A. 9
B. 16
C. 24
D. 26
E. None of these

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Answer: Option D

Explanation:

2651 . The area of a rectangle R with width 4 feet is equal to the area of a square S, which has a perimeter of 24 feet. The perimeter of the rectangle R is-

A. 9 ft
B. 16 ft
C. 24 ft
D. 26 ft

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Answer: Option D

Explanation:

we know, perimeter of square = 4a atq, 4a = 24 or, a = 6 so, area of square = 6*6 = 36 according to the question, area of rectangle = 36 or, L*W = 36 or, l = 36/4 or, l = 9 perimeter of rectangle = 2*(9 + 4) = 26 ft (ans).

সমন্বিত ৭ ব্যাংক || অফিসার (ক্যাশ) (24-05-2024)

A. 1.6 m
B. 160 m
C. 160 cm
D. 1.6 cm

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Answer: Option B

Explanation:

The scale of the map is 1 cm to 100 m. This means that 1 cm on the map represents 100 meters in reality.

Given that the length on the map is 3.25 cm, you can find the actual length by multiplying it by the scale factor:

Actual length = Length on map × Scale factor = 3.25 cm × 100 m/cm = 325 m

Now, you mentioned that the area of the rectangular field is 52000 square meters. The area of a rectangle is given by the formula:

Area=Length×Breadth

We know the area is 52000 square meters and the length is 325 meters. Substituting these values into the formula, we can find the breadth:

52000m2=325m×Breadth

Breadth=325m52000m2

Breadth=160m

বাংলাদেশ ব্যাংক || সহকারী পরিচালক (AD) (20-10-2023)

A. 9
B. 16
C. 24
D. 26

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Answer: Option D

Explanation:

Side of the square = 24/4 = 6.

Area of the square = 62 = 36

ATQ, Area of rectangle, Length x width = 36

or, Length x 4 = 36

or, Length = 9

So, the perimeter of the rectangle = 2(Length + width) = 2(9 + 4) = 26

2654 . The area of a rhombus is 96 sq. cm and the length of one of the diagonals is 16 cm. The length of the other diagonal is

A. 18
B. 12
C. 9
D. 6

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Answer: Option B

Explanation:

The length of the other diagonal is x. 
We know, Area  =  1/2 * One diagonal * other diogonal
So, 1/2 *16*x  =  96
x  =  16.

Assistant Director (General) 06.07.18

A. 3
B. 6
C. 9
D. 1/3

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Answer: Option C

Explanation:

2641 . The angels of a triangle are in the ratio 2:3:4. What is the value of the largest angle in the triangle ?

2642 . The angle between the minute hand and the hour hand of a clock when the time is 8.30, is :

2643 . The angle between the minute hand and the hour hand of the clock when the time is 4.20 is:

2644 . The angle measure of the base angles of an isosceles triangle are represented by x and the vertex angle is 3x + 10. Find the measure of base angle.

2645 . The angle of elevation of a ladder leaning against a wall is 60° and the foot of the ladder is 4.6 m away from the wall. The length of the ladder is

2646 . The area of a field is 680 square feet . If the cost of fencing is Tk 50 per foot , then how much will it cost to fence the field?

2647 . The area of a rectangle is 200 sq. meter . If the length is twice the breadth , what is the perimeter of the rectangle ?

2648 . The area of a rectangle is 200 sq. meter. If the length is twice the breadth, what is the perimeter of the rectangle?

2649 . The area of a rectangle is 460 square meters. If the length is 15% more than the breadth, what is the breadth of the rectangular field?

2650 . The area of a rectangle R with width 4 feet is equal to the area of a square S, which has a perimeter of 24 feet. The perimeter of the rectangle R, in feet, is :

2651 . The area of a rectangle R with width 4 feet is equal to the area of a square S, which has a perimeter of 24 feet. The perimeter of the rectangle R is-

2652 . The area of a rectangular field is 52000 sq. meters. This rectangular area has been drawn on a map to the scale 1 cm to 100 m. The length is shown as 3.25 cm on the map. The breadth of the rectangular field in the map is -

2653 . The area of a rectangular R width 4 feet is equal to the area of a square S which has a perimeter of 24 feet. The perimeter of the rectangular R, in feet is--

2654 . The area of a rhombus is 96 sq. cm and the length of one of the diagonals is 16 cm. The length of the other diagonal is

2655 . The area of a square on a straight line is how many times that on its one- third ?

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