A rectangle has length 8 cm and width w cm. If its perimeter is 22 cm, what is w?
Note
Use P = 2(l+w). Substitute: 22=2(8+w). Divide by 2: 11=8+w. So w=11-8=3.
A rectangle has length 8 cm and width w cm. If its perimeter is 22 cm, what is w?
Use P = 2(l+w). Substitute: 22=2(8+w). Divide by 2: 11=8+w. So w=11-8=3.