Question

Ben made a model (shown below) of the square pyramid he plans to build when he grows up. Find the surface area of the model.

Answer 1

Answer:

The answer is "$240 \ m^2$"

Step-by-step explanation:

please find the given diagram image file in the attachment.

In this question, the surface area model includes two things that are square pyramid is equal to the area of the square base and the area of the flour lateral triangle:

$SA= 10\times 10 +4 (\frac{1}{2}\times (10) \times (7))$

     $= 100 +4 (\frac{1}{2} \times 70)\\\\= 100 +4 (35)\\\\= 100 +140\\\\=240 \m^2$

The surface area of the model is $240 \ m^2$.