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**Q.1. All the vertices of a rhombus lie on a circle. Find the area of the rhombus, if area of the circle is 1256 cm ^{2} (Use π = 3.14).Ans.** Area of the circle = 1256 cm

⇒ A = πr

A.T.Q. 1256 = πr

Here, Diagonals of rhombus = diameter of the circle

Ans.

A = πr

1.54 = πr

Distance covered in one revolution = 4.4 m

No. of revolutions

Ans.

Diameter of middle circle = 2x

Diameter of outer most circle = 3x

∴ Area of inner most circle = π(x)

Area of middle circle =

Area of outer most circle =

Ratio of the areas of three regions.

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