Chapter SH, Problem 8.9EP

To determine

To write expression for area of block and sidewalk.

Answer to Problem 8.9EP

Area of block is 8000 ft²

Sidewalk of block is 360 ft.

Explanation of Solution

Given information:

  

l=100 ft

b=80 ft

Formula used:

Area of rectangle A= $length\times breadth$

Where,

l is length bis width

Sidewalk of block, P=2(l+b)

Calculation:

Substituting value of l and b in the area formula

  

On solving,

A=8000 ft²

Substituting value of l and b in the sidewalk formula

P=2(100+80)

On solving,

=2(180)

On solving,

=360 ft

Hence, area of block is 8000 ft²and sidewalk of block 360 ft.