PERIMETER 1

Area of rectangle is 60m². Find its perimeter if width is 4m. 

Solution

A = L x w

60 = L x 4

60 = 4L                                                

4      4

15 = L

Now; P =2(L + w)

= 2(15 + 4)

= 2 x 19

= 38m

Hence perimeter is 38m

TRY THIS………..

Area of rectangle is 80m². Find its perimeter if width is 4m.