Question

The perimeter of a rectangular sheet is 70 cm if its breadth is 15 cm find the length also find its area

Answer 1

$2(l + b) = p \\ 2(l + 15) = 70 \\ l + 15 = 35 \\ l = 20 \\ area = l \times b \\ \: \: \: \: = 20 \times 15 = 300sq.cm$

Answer 2

300 sq cm

Step-by-step explanation:

p =2(l+b)

70cm =2(l+15)

35 cm =l+15

35-15 = l

l=20

area= l×b

=20×15

=300 sq cm