Question

the length of a rectangle is 20 more than breadth. if the perimeter is 100cm find the dimension of rectangle

Answer 1

2y+2x=100  

y=20+x  

2(20+x)+2x=100  

x=15  

y=20+15  

x=15  

y=35

                                OR

2l+2w=100  

l=w+20  

2(w+20)+2w=100  

2w+40+2w=100  

4w+40=100  

4w=60  

w=15cm  

l=35 cm

                             HOPE IT HELPS

Answer 2

l=20+b
2(l+b)=100
2(20+2b)=100
2b=30
b=15
l=35