Question

The formula for the volume of a box is V=1· w ·h, Where 1 is the length, w is the width, and h is height. Using rounding to the nearest whole number, which of the following is an estimate of the volume of a box that has a length of a 7.2 centimeters, a width of 6.1 centimeters, and a height of 8.9 centimeters?

A.) 218 cm
B.) 242 cm
C.) 378 cm
D.) 452 cm

Answer 1

C) The estimated volume of the box is 378 sq cm.

Explanation:

Here, length of the box = 7.2 cm

Width of the box = 6.1 cm

Height of the box = 8.9 cm

Now, if the number is of the form a.b

If b < 5, the number is rounded off to a.

If b ≥ 5, the number is rounded off to (a+1).

Hence, 7.2 is rounded off to 7. (as 2< 5) ⇒ L' = 7 cm

6.1 is rounded off to 6. (as 1< 5) ⇒ W' = 6 cm

8.9 is rounded off to 9. (as 9 > 5) ⇒ H' = 9 cm

Now, the volume of the box = L'x B' X H'

= 7 cm x 6 cm x 9 cm

= 378 sq cm

Hence, the estimated volume of the box is 378 sq cm.