Question

find the length of an rectangle whose perimeter is 72cm and breadth is 16 cm
​

Answer 1

Answer:

20cm

Step-by-step explanation:

perimeter= 72cm and breadth = 16cm.

perimeter = 2(l+b)

= 2(l+16)

72cm =2l+32

72-32 = 2l

40=2l

therefore, l= 40/2 =20cm.

.

.

.

.

.

.

thank you friend.....!!!

Answer 2

Answer:

Length = x

Breadth = 16cm

Perimeter = 72cm

we know that 2(l+b) = perimeter

2(x+16)=72cm

(x+16)=72/2

(x+16)=36

x=36-16

x= 20cm

thus the length is 20cm

proof :

2(20cm + 16cm)

2(36)

=72 cm

hence proved