Question

Jim is clearing out trees and planting grass to enlarge his backyard. He plans to double both the width and the length of his current rectangular backyard, as shown.
a. How will the area of Jim's new backyard compare to the area of his current backyard? b. Will it take Jim twice as long to mow his new backyard then his old backyard? Explain. (Assume Jim mows at the same rate for both yards.)

Answer 1

U should know the area of rectangle is w*l
if we increase it by double or times 2 its area  will be
A=2w*2wl
A=4wl
area would be 4 times of original one
Now u can get the answer