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1. The length of two smaller sides of a right angled triangle are 5 cm and 12 cm respectively. The length of the thirs side is-
- A. 15 cm
- B. 15 cm
- C. 15 cm
- D. 15 cm
Answer: Option D
Explanation:
In a right-angled triangle, you can use the Pythagorean theorem to find the length of the third side if you know the lengths of the other two sides. The Pythagorean theorem states:
c² = a² + b²
Where:
c is the length of the hypotenuse (the third side).
a and b are the lengths of the other two sides.
In this case, a = 5 cm and b = 12 cm. We want to find c:
c² = 5² + 12² c² = 25 + 144 c² = 169
Now, take the square root of both sides to find c:
c = √169 c = 13 cm
So, the length of the third side (the hypotenuse) is 13 cm.
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