R S Aggarwal and Veena Aggarwal Solutions for Exercise 3: MULTIPLE-CHOICE QUESTIONS (MCQ)

If the perimeter of a square is equal to the circumference of a circle then the ratio of their areas is

If the sum of the areas of two circles with radii $R_1$ and $R_2$ is equal to the area of a circle of radius $R$ then

If the sum of the circumferences of two circles with radii $R_1$ and $R_2$ is equal to the circumference of a radius $R$ then 

If the circumference of a circle and the perimeter of a square are equal then

Assume $\left[\mathrm{\pi }=\frac{22}{7}\right]$

The radii of two concentric circles are $19 \mathrm{cm}$ and $16 \mathrm{cm}$ respectively. The area of the ring enclosed by these circle is

A chord of a circle of radius $10 \mathrm{cm}$ subtends right angles at the centre. The area of the minor segment (given, $\pi =3.14$) is

In a circle of radius $21 \mathrm{cm}$, an arc subtends an angles of $60°$ at the centre. The length of the arc is

[Take $\mathrm{\pi }=\frac{22}{7}$]

In a circle of radius $14 \mathrm{cm}$, an arc subtends an angles of $120°$ at the centre. If $\sqrt{3}=1.73$ then the area of the segment of the circle is