Question

Estimate the surface area of a cube with side length 9.9 in

Answer 1

Answer:

Option C is correct

600 $in^2$

Step-by-step explanation:

Surface area of cube(S) is given by:

$S = 6a^2$            ....[1]

where, a is the side length of a cube.

As per the statement:

A cube with side length 9.9 in.

⇒a = 9.9 in.

Substitute in [1] we have;

$S = 6 \cdot (9.9)^2 = 6 \cdot 98.01 = 588.01 \approx 600 in^2$

Therefore, the estimate the surface area of a cube is, 600 $in^2$

Answer 2

The answer would be C) 600 in2.