Question

8. Perimeter of a square and a rectangle is same. If a side of the square
is 15cm and one side of the rectangle is 18cm, find the area of the
rectangle.​

Answer 1

Answer:

perimeter of a. rectangle=2×(l+b)

Explanation:

perimeter of a rectangle=2×15+18

=2×33

=66 is the answer

Answer 2

Answer:

Area of the rectangle=288cm^2

Explanation:

Perimeter of the square

= 4×side

=4×15cm

=60cm

perimeter of the rectangle

=2(l+b)

=2l+2b

It is given that perimeter of a square is equal to the perimeter of rectangle, then

60cm = 2l+2b

60cm=2×18+2b

60cm=36+2b

24cm=2b

b=12cm

Now,

Area of the rectangle

=l×b

=(18×16)cm^2

=288cm^2