Question

How many squares with sides 1/2 inch long are needed to cover a rectangle that is 4 ft long and 4 ft wide ?
A) 9216
B) 10246
C) 12345
D) 7527

Answer 1

Hey.


Here is your answer.


The given side of square = 1/2 inch

We know that 1 ft = 12 inches

The given sides of Rectangle is

length = 4ft = 4×12 inch = 48 inch

breadth = 4 ft = 48 inches


So, the no. of squares needed to cover the rectangle will be


$\frac{area \: of \: rectangle}{area \: of \: square}$


= (48 × 48)/ (0.5×0.5)

= 9216


So, 9216 squares will be needed to cover the rectangle.


So, (A) is correct.


Thanks

Answer 2

As we know
1 foot =12 inches
4 squares of 1/2 will be 1 feet

=(4*16*4*16)/(1/4)
=10246