Question

A rectangle is formed by joining two squares with area 49 cm2.

What is the perimeter of the rectangle?

Answer 1

→ Chapter : Plane ←
≡ Solution:
⇔ First, we should know the size of the square side [s]:
⇒
`s^(2)=49`
⇒
`s=√(49)`
⇒
`s=7`

⇔ Find the perimeter of the rectangle [p]:
⇒
`p=(6).(s)`
⇒
`p=(6).(7)=\boxed{42}cm`
⇆ Note: Look at the picture for more clearly

Answer 2

7+7+7+7+7+7+7+7=56

56-14=42

answer=42cm