Question

The breadth of a rectangle is 4cm. smaller than that its length. If the length is $\sqrt{11} +2cm$

a)What is its breadth?
b)Find the perimeter and area of the rectangle

Answer 1

Answer:

Let breadth of the rectangle be 'b' cm.

So length of the rectangle will be 'b+2' cm.

Now

Perimeter =48

2(l+b)=48

2(b+2+b)=48

2b+2=24

2b=22

b=11 cm

l=b+2=13 cm

Then,

Area of the rectangle =lb

=13×11

=143 cm

2