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2 years ago

Can I get some help on these two

Mathematics

1 answer:

tia_tia [17]2 years ago

3 0

9514 1404 393

Answer:

cone: 138.16 in²

pyramid: 352 m²

Step-by-step explanation:

Use the appropriate formula from your list of area and volume formulas.

A = πr(r +h) . . . . . where r is the radius and h is the slant height

The radius is half the diameter, so is 4 inches.

A = π(4 in)(4 in + 7 in) = 44π in² ≈ 138.16 in²

<u>Lateral Area of a Square Pyramid</u>

A = 2sh . . . . . where s is the side length of the base and h is the slant height

A = 2(8 m)(22 m) = 352 m²

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