Question

A rectangle has a width of 10 centimeters. The rectangle's length is 4 times its width. What is the perimeter of the rectangle?

Answer 1

If it's width is 10cm then it's legth has to be 40cm. So 10+10+40+40=100cm Perimeter 

Answer 2

100 cm.

Explanation:

We have been given that a rectangle has a width of 10 centimeters. The rectangle's length is 4 times its width.

The length of rectangle would be
`4* 10\text{ cm}=40\text{ cm}`.

We know that perimeter of rectangle is 2 times the sum of length and width of rectangle.

`\text{Perimeter of rectangle}=2(\text{Length+Width)}`

`\text{Perimeter of rectangle}=2(\text{10 cm+ 40 cm)}`

`\text{Perimeter of rectangle}=2(\text{50 cm)}`

`\text{Perimeter of rectangle}=100\text{ cm}`

Therefore, the perimeter of our given rectangle would be 100 cm.