1

Problem

Iron Man wanted to make a dog pen with an area of 45 square feet. What could the dimensions of his dog pen be?

2

Step

Area of a rectangle

45 sq.feet

3

Step

Here only the area is given, we want to find the length and breadth.

4

Step

To find the length and breadth of a dog pen.

5

Step

We want to see the pair of numbers that multiply to 45.

6

Step

45 is multiplied by 5 x 9. Here 5 x 9 is equals to 45.

7

Solution

So, the two dimensions are 5 ft and 9 ft.

8

Sumup

Please summarize steps

Choices

9

Choice-A

This is correct because it results in an area of 45 square feet

Correct 5 feet , 9feet

10

Choice-B

This is not correct because it results in an area of 36 square feet, not the required 45 square feet

Wrong 4 feet , 9feet

11

Choice-C

This is not correct because it results in an area of 27 square feet, not the required 45 square feet

Wrong 9 feet , 3 feet

12

Choice-D

This is not correct because it results in an area of 12 square feet, not the required 45 square feet

Wrong 6 feet, 2 feet

13

Answer

Option

A

14

Sumup

Please summarize choices