Monica Capoor Solutions for Chapter: Mensuration I Area of Polygons, Exercise 2: EXERCISE

If the area of the shaded part is $k {\mathrm{cm}}^2$, find the value of $k$.

If the area of the shaded part is $k {\mathrm{cm}}^2$, find the value of $k$

The diameter of a semicircular protractor is $7 \mathrm{cm}$. If the perimeter is $k \mathrm{cm}$, write the value of $k$ as the final answer. Take $(\pi =\frac{22}{7})$

The diameter of the wheel is $1.26 \mathrm{m}$. How far will it travel in $500$ revolutions?

If the area of a circular ring whose external and internal radii are $21 \mathrm{cm}$ and $14 \mathrm{cm}$ respectively is $k {\mathrm{cm}}^2$, find the value of $k$.

The side of an equilateral triangle is $16 \mathrm{cm}$. Find the length of its altitude.

The inner circumference of the circular track is $220 \mathrm{m}$. The track is $7 \mathrm{m}$ wide everywhere. If the cost of putting up fence along the outer circle at the rate of $₹2$ per metre is $₹x$, then find the value of $x$.

From the semicircular region $\mathrm{OABCD}$, a $△\mathrm{ABD}$ in which $\mathrm{AB}=3 \mathrm{cm}$ and $\mathrm{BD}=4 \mathrm{cm}$. Find the perimeter of the remaining figure.