Question

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Answer 1

Option B, 17m

Explanation:

The figure is divided in two triangles. Both triangles are right triangles. To find the lengths, use Pythagorean Theorem (since its a right angled triangle).

Pythagorean Theorem states: A² + B² = C²

A and B could be the sides adjacent to the right angle (the legs of the triangle)

C always has to be the hypotenuse, the side opposite to the right angle.

In this situation we are given both the legs and have to find the hypotenuse.

⇒ A² + B² = C²

⇒ 8² + 15² = Wall Brace²

⇒ 64 + 225 = Wall Brace²

⇒ 289 = Wall Brace²

⇒
`√(289) = \sqrt{Wall Brace^(2) }`

⇒ 17 = Wall Brace

Hope this helps!

Answer 2

b 17m

Explanation:

use theorem of pythag