Question

the length of a rectangle is four times it's width.if the perimeter is 70cm. Calculate the length and area of the rectangle​

Answer 1

Explanation:

width of rectangle(w)=x let

length (l)=4x

perimeter of rectangle=70

2(l+w)=70

2(4x+x)=70

8x+2x=70

10x=70

x=70/10

x=7

again,

• length =4x=4×7=28cm
• width=x=7

area of rectangle =l×w

• 7×28
• 196cm²

hope it helps.