Question

a thin wire 20 long is formed into a rectangular if the width of this rectangle is 4 cm what is its length?
​

Answer 1

ANSWER

Perimeter of the wire =20cm

2(l+w)=20

⇒2[l+4]=20

⇒2l+8=2

⇒2l=12

⇒l=6cm

Hence, length =6cm