Question

A room measures 12 feet by 15 feet. How many 3 foot by 3 foot squares of carpet are needed cover the floor of this room?

Answer 1

Answer:

20

Step-by-step explanation:

Here dimension of the floor is 12 feet by 15 feet.

Therefore Surface area of the floor=(12×15)=180square feet.

Dimension of the carpet=3feet by 3 feet.

Surface area of the carpet= (3×3)=9 square feet.

Number of carpet needed to cover the floor=(180÷9)=20

Answer 2

20 carpets are needed cover the floor of this room.

Solution:

The measurement of the room is 12 ft and 15 ft

So, the area of the room is = $(length\times breadth)$ = $(12\times 15) \ sqft = 180 \ sqft$

The dimension of the carpet is 3 ft by 3 ft

Therefore, the area of the carpet is = $(3\times 3) = 9 \ sqft$

Hence the number of carpet needed is $\frac{180}{9}= 20$

So, total 20 carpets are needed.