Question

3
what is the volume of the figure below, which is composed of two cubes with side lengths of 9 units?
note: figure is not drawn to scale.
a. 729 cubic units
b. 810 cubic units
c. 54 cubic units
d. 1,458 cubic units

Explanation:

Step1: Volume of one cube

Volume = $side^3 = 9^3 = 729$ cubic units

Step2: Total volume of two cubes

Total = $2 \times 729 = 1458$ cubic units

Answer:

D. 1,458 cubic units