Question

The figure below shows a rectangular lawn. 13 ft (a) Use the calculator to find the area and perimeter of the lawn. Make sure to include the correct units. Area: 28 ft Perimeter: (b) The lawn will be mowed. Which measure would be used in finding how long it will take? O Perimeter O Area (c) The lawn will be surrounded by a rope. Which measure would be used in finding how much rope to buy? O Perimeter O Area ft X ft² 5 ?

Answer 1

Given a rectangle with sides "a" and "b":

The area (A) of the rectangle is:

`A=ab`

And the perimeter (P) is:

`P=2a+2b`

Given the sides:

a = 28 ft

b = 13 ft

(A)

The area is:

`\begin{gathered} A=28ft*13ft \\ A=364ft^2 \end{gathered}`

The perimeter is:

`\begin{gathered} P=2*28ft+2*13ft \\ P=56ft+26ft \\ P=82ft \end{gathered}`

(B)

All the area of the lawn will the molded, thus the area must be used.

(C)

The rope will cover only the surroundings, thus the perimeter must be used.