Question

a rectangle whose length is 20cm has an area of 100cm square. what is its perimeter?​

Answer 1

Answer:

50cm

Step-by-step explanation:

Area of rectangle = L×b

100=20×b

B=100/20

b=5

Now,

Perimeter of rectangle = 2(l+b)

= 2(20+5)

=2×25

=50

Hence, perimeter of rectangle = 50cm