A rectangular garden's perimeter is 80 cm. the length is 10 more than the width. find the length and width of the rectangular garden.

Question

length and width.

Answer 1

Hi Wesley,

 

the length is 10 more than the width => l = w + 10 ........... eq(1)

 

perimeter is 80 cm => 2l + 2w = 80cm..............................eq(2)

 

now substitute eq(1) in to eq(2)

 

2(w + 10) + 2w = 80

2w + 20 + 2w = 80

4w + 20 -20 = 80 -20

4w = 60

w = 15

l = w + 10 = 15 + 10 = 25

 

2*15 + 2*25 = 80