Question

15. A triangular pennant has an area of 640 sq. cm. What is its base if the height is 32cm?15. What is asked?1 pointA.The area of the triangular pennant.B. The height of the triangular pennant.C. The volume of the triangular pennantD. The base of the triangular pennant.

Answer 1

Given that

The area of the triangular pennant is 640 sq cm and the height is 32 cm.

So we have to find the base of the pennant.

Explanation -

The formula for the area of the triangle is

$A=\frac{1}{2}\text{ }\times base\times height$

By substituting the values we have

$\begin{gathered} 640=\frac{1}{2}\times b\times32 \\ b=\frac{640}{32}\times2=20\times2=40 \\ b=40cm \end{gathered}$

So the base is 40 cm.

Hence the correct option is D.

And the final answer is 40cm.