1

Problem

What is the area of a square with a side that measures 20 m?

2

Formula

Area of a square is A = Side x Side .

3

Step

The side(s) of a square is

20m

4

Step

Substitute the values by using formula

A = 20 x 20

5

Step

After Simplification, we get

400 sq.mtrs

6

Solution

Then the area of a square is 400 sq.mtrs.

7

Sumup

Please summarize steps

Choices

8

Choice-A

This matches the calculated area and is correct

Correct 400 sq.mtrs

9

Choice-B

This is incorrect. The correct area is smaller

Wrong 40 sq.mtrs

10

Choice-C

This is incorrect. The correct area is smaller

Wrong 144 sq.mtrs

11

Choice-D

This is incorrect. The correct area is larger

Wrong 440 sq.mtrs

12

Answer

Option

A

13

Sumup

Please summarize choices