Question

Find the surface area to the nearest tenth

Answer 1

Step-by-step explanation:

Surface Area of Figure = Area of 4 triangular sides + Area of Base

=

$4 \times ( \frac{1}{2} \times base \times height) + (length \: \times \: width) \\ = 4 \times ( \frac{1}{2} \times 10 \times 12.1) + (10 \times 10) \\ = 4 \times 60.5 + 100 \\ = 242 + 100 \\ = 342 {yd}^{2}$