Known :
Perimeter = 160 ft
length = 50 ft
Asked :
Area = ...?
Answer :
Find the width first :
Perimeter = 2 (length + width)
160 = 2 (50 + width)
width = (160 ÷ 2) - 50
width = 80 - 50
width = 30 ft
Now, let's find the Area :
Area = length × width
= 50 × 30
= 1.500 ft²
So, the area of the playground is 1.500 ft²
Hope it helpful and useful :)