Question

perimeter of a rectangle is 13cm .If its width is 11/4cm .Find it's area.​

Answer 1

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Answer 2

Answer:

First we find the length

Perimeter of a rectangle=2(l+b)

13 =2×l+11/4 cm

13=2l+22/4 cm

22/4+2l=13 cm

2l=13/1-22/4 cm

LCM of (1,4)=4 cm

2l=52/1-22/4 cm

2l=30/4 cm

l=30/4×2 cm

l=15/4 cm

Therefore length = 15/4

Now we find out the area of a rectangle

Area of a rectangle = l×b

=15/4×11/4 cm

= 165/16 cm

Therefore area of a rectangle = 165/16.