Question

abcd is a parallelogram. the perimeter is 144cm and bc= 20 cm then find ab ​

Answer 1

Answer:

perimeter of parallel gram= 2(l+b)

and one side of parallelogram =20

2(l+b) = 144

2 (20 +b) = 144

40+2b = 144

2b = 144-40

2b = 104

b= 104/2

b = 52 cm