Question

From a square cardboard ,a circle of biggest area was cut out .If the area of a circle is 154cm2 , calculate the original area of the cardboard?

Answer 1

Step-by-step explanation:

area of circle is 154cm^2.

so of circle is 7 cm.

a the circle of largest area is cut from a square.so length of side of the square is 2×r of circle.

so side=14cm

area is 196cm^2

Answer 2

The area of the square cardboard is