Question B. Find the width of a rectangle if its length is 5 more than the width and its perimeter is 90 cm.
Answer: Width is 20cm Step-by-step explanation: Step one: Given data let the width be x W= x L= x+5 P= 90 Step two: The expression for the perimeter is P= 2L+2W 90= 2*x+2(x+5) 90= 2x+2x+10 collect like terms 90-10=4x 80= 4x divide both sides by 4 x= 80/4 x= 20 Log in to Reply
Answer:
Width is 20cm
Step-by-step explanation:
Step one:
Given data
let the width be x
W= x
L= x+5
P= 90
Step two:
The expression for the perimeter is
P= 2L+2W
90= 2*x+2(x+5)
90= 2x+2x+10
collect like terms
90-10=4x
80= 4x
divide both sides by 4
x= 80/4
x= 20