Question

12.

Find the value of x. If necessary, round to the nearest tenth.


A. 7.0 in.

B. 9.9 in.

C. 14.0 in.

D. 11.9 in.

Answer 1

9.9 inches

Explanation:

The area of a triangle is given by

A = 1/2 bh where b is the length of the base and h is the length of the height

49 = 1/2 x*x

Multiply each side by 2

2*49 = x^2

98 = x^2

Take the square root of each side

sqrt(98) = sqrt(x^2)

9.899494937 =x

Rounding to the nearest tenth

9.9 =x