Question

Linda is building steps for her porch. What is the volume of the steps?

144,000 cm3

288,000 cm3

324,000 cm3

540,000 cm3

Answer 1

The answer is 324,000 cm3.

Smaller rectangle:

L x W x H
120 x 30 x 30 = 108000


Taller rectangle:

L x W x H
120 x 30 x 60 = 216000

216000 + 108000 = 324, 000 cm3

Answer 2

Explanation:

upper block:

length (l) = 120 cm

Width (w) = 30 cm

Height (h) = 60 cm

Volume of upper block = l * w * h

= 120 * 30 *60

= 216,000 cm³

Lower Block

l = 120 cm

w = 30 cm

h = 30 cm

Volume of lower block = 120 * 30 * 30

= 108,000 cm³

Volume of steps = 216,000 + 108,000 = 324,000 cm³