Question

A rectangle is 9 ft long and 40 in. wide. What is its area in square feet? (Note: 1 ft = 12 in.)

30 ft2


36 ft2


98 ft2


360 ft2

Answer 1

The correct answer is first option 30 ft²

Explanation:

Formula:-

Area of rectangle = l x b

l - Length of rectangle

b - Breadth of rectangle

It is given that,A rectangle is 9 ft long and 40 in

To find the area

here l = 9 ft

b = 40 in = 40/12 ft

Area = l x b = 9 x (40/12) = 30 ft²

Area of rectangle = 30 ft²

The correct answer is first option 30 ft²

Answer 2

Answer: first option

Explanation:

Let's make the following conversion:

40 inches to feet (Knowing that 1 feet=12 inches):

`(40in)((1ft)/(12in))=3.333ft`

The formula for calculate the are of a rectangle is:

`A=l*w`

Where l is the lenght and w is the width.

Therefore, when you substitute values, you obtain the following result:

`l=9ft\\w=3.33ft\\\\A=(9ft)(3.333ft)\\A=30ft`