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siniylev [52]
3 years ago
15

6. This solid is a composite of a cube and square pyramid. The base of the solid is the base of the cube. Find the surface area

for the solid​

Mathematics
1 answer:
Sergio039 [100]3 years ago
3 0

Answer:

960 ft^2

Step-by-step explanation:

There are 9 surfaces forming the solid.

5 of them are congruent squares and 4 of them are congruent triangles.

area of square = (side)^2

area of triangle = (base)(height)/2

total surface area = 5 * area of square + 4 * area of triangle

A = 5 * (12 ft)^2 + 4 * (12 ft * 10 ft)/2

A = 5 * 144 ft^2 + 4 * 60 ft^2

A = 720 ft^2 + 240 ft^2

A = 960 ft^2

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