Question

Yooo pls help fr.. whats the total surface area :( ive srsly been doing this for five hrs

Answer 1

Answer and Step-by-step explanation:

All you have to do is find the area of one of the half triangles, multiply that by 2, then multiply it by 4. Then find the area of the square.

Half of 8 is 4, which is the length of the small line of the triangle.

The area of a triangle equation is A = $\frac{bh}{2}$.

The area of a square equation is A = LW

Triangle:

$A = \frac{10*4}{2}\\\\\\\\A = \frac{40}{2}\\\\\\A = 20$

The small triangle area is 20, so one triangle face of the square pyramid is 40.

40 times 4 is 160.

Square:

8 × 8 = 64

The area of the square is 64.

Now add together the areas.

Surface area:

160 + 64 = 224

The surface area of the square pyramid is 224 $cm^{2}$.

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