Question

Need help with math hw, please help me!

Answer 1

see explanation

Explanation:

(1)

The volume (V) of a cylinder is calculated using the formula

V = πr²h ( r is the radius and h the height )

here r = 4 and h = 12, hence

V = π × 4² × 12 = π × 16 × 12 = 192π ≈ 603.2 cm³

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(2)

The volume (V) of a cuboid is calculated using the formula

V = lbh ( l is length, b is width and h is height )

here b = 5, h = 10 and V = 200 , l is required to be found

substitute values into the formula

200 = l × 5 × 10

200 = 50l ( divide both sides by 50 )

4 = l

Thus the required length is 4 inches