Step-by-step explanation:

8. The volume of an Aquarium with 60cm wide, 30cm high and 45cm long.

a. 2,700 cm³

b. 7,200 cm³

c. 7,020 cm³

d. 2,070 cm³

solution:

V= LWH

V= 45 cm × 60 cm × 30 cm

V= 1800 cm² × 45 cm

V= 81,000 cm³

the answer is not in the choices but if the length of aquarium is 4 the volume is 7,200 cm³

solution:

V= LWH

V= 4 cm × 60 cm × 30 cm

V= 7,200 cm³

9. The length of an edge of a cube is 9m. What's the volume?

a. 729 m³

b. 927 m³

c. 749 m³

d. 479 m³

V= s³

V= (9 m)³

V= 729 m³

hope it can help...