BD Merit - Freelancing, BCS, Bank, Primary, Admission, NTRCA

1 . If the length of a rectangular field is 30 feet more than its width and the perimeter is 380 feet, the area of the field is (in sq. feet):

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Answer: Option B

Explanation:

Let, the width = x feet

the length = x + 30 feet

We know, perimeter = 2(Length + breadth)

Perimeter = 2(x + 30 + x)

According to the question

2(x + 30 +x) = 380

=> 4x + 60 = 380

=> 4x = 380 – 60

x = 80 feet.

The length is = 80 + 30 = 110 feet

Area =110 x 80 Sq. feet

= 8,800 Sq. feet