A rectangle has length 12 cm and width w cm. If its perimeter is 32 cm, what is w?
Note
Use P = 2(l+w). Substitute: 32=2(12+w). Divide by 2: 16=12+w. So w=16-12=4.
A rectangle has length 12 cm and width w cm. If its perimeter is 32 cm, what is w?
Use P = 2(l+w). Substitute: 32=2(12+w). Divide by 2: 16=12+w. So w=16-12=4.