What is the surface area of a square pyramid that has an 8 cm base length and triangular faces that are 14 cm tall? square centi

Question

vichka [17]

3 years ago

11

What is the surface area of a square pyramid that has an 8 cm base length and triangular faces that are 14 cm tall? square centi

meters

Mathematics

2 answers:

tatiyna · Answer 1 · 2022-04-17T08:09:56+03:00

tatiyna3 years ago

7 0

It's around 296.96 cm^2

good luck

Vedmedyk [2.9K] · Answer 2 · 2022-04-17T09:35:56+03:00

Surface Area (S.A.) is the area of all of the faces.
The base is square so its area is: side² = 8 cm x 8 cm = 64 cm²
The faces are triangles so the area of ONE face is: (1/2) x base x height =
(1/2)(8 cm)(14 cm) = 56 cm²

The sum of all of the faces are 64 cm² + 4(56 cm²) = 64 + 224 = 288 cm²

Answer: the surface area of the square pyramid is 288 cm²