Question

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

Answer 1

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

56-14=42

answer=42cm

Answer 2

→ Chapter : Plane ←
≡ Solution:
⇔ First, we should know the size of the square side [s]:
⇒ $s^{2}=49$
⇒ $s=\sqrt{49}$
⇒ $s=7$

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