Question

Estimate the area of the square shown below A.) 36 ft^2B.) 20 ft^2C.) 100 ft^2D.) 81 ft^2

Answer 1

The area of a square can be calculated by using this formula:

$A=s^2$

Where "s" is the length of a side of the square.

In this case, you can identify that:

$s=9.7ft$

Then, in order to estimate the area of the square, you can follow these steps:

1. Round the length "s" to the nearest whole number. Since the first digit after the Decimal point is 7 and:

$7>5$

You must round up:

$s\approx10ft$

2. Knowing that:

$10^2=10\cdot10$

You can determine that:

$A\approx100ft^2$

Hence, the answer is: Option C.