Question

a rectangle has a perimeter of 60cm.
if length and breadth of rectangle is (k+4)cm and (3k-2)cm respectively then value of k is​

Answer 1

perimeter= 60

2(l+b)=60

2(k+4+3k-2)=60

2(4k+2)=60

8k+4=60

8k=60-4

8k=56

k=56÷8

k=7