Question

use the calculator to find the area and perimeter of the lawn. make sure to include the correct units.
(a)
area:
perimeter:
(b) the lawn will be mowed. which measure would be used in finding how long it will take?
perimeter area
(c) the lawn will be surrounded by a rope. which measure would be used in finding how much rope to buy?
perimeter area

Explanation:

Step1: Recall area formula for rectangle

For a rectangle with length $l = 23$ ft and width $w=13$ ft, the area formula is $A=l\times w$.
$A = 23\times13=299$ ft²

Step2: Recall perimeter formula for rectangle

The perimeter formula for a rectangle is $P = 2(l + w)$.
$P=2(23 + 13)=2\times36 = 72$ ft

Step3: Answer part (b)

To find how long it will take to mow, we consider the area to be mowed. So the measure is area.

Step4: Answer part (c)

To find how much rope to buy to surround the lawn, we consider the perimeter. So the measure is perimeter.

Answer:

(a) Area: 299 ft², Perimeter: 72 ft
(b) Area
(c) Perimeter