J P Mohindru and Bharat Mohindru Solutions for Chapter: Areas Related to Circles, Exercise 7: CHAPTER TEST

In the figure, two circular flower beds have been shown on two sides of a square lawn $ABCD$ of side $50 \mathrm{m}$. If the centre of each circular flower bed is the point of intersection of the diagonals of the square lawn. If the sum of the areas of the lawn and the flower beds is $k {\mathrm{cm}}^2$, find $k$.  (Use $\mathrm{\pi }=3.14$)

Find the value of K

The area of the shaded part in the given figure is ${\mathrm{K} \mathrm{cm}}^2$  (Take $\mathrm{\pi }=3.14$)

In the square $ABCD$ with side $2a$ with the vertices of the square as centre and $\frac{1}{2}$ the side of the square as radius, four sectors have been drawn. Find the area of the shaded portion.

Four equal circles are described about the four corners of a square so that each touches two of others, as shown in figure. Each side of square measuring $14 \mathrm{cm}$. If the area of the shaded region is $k {\mathrm{cm}}^2$, find $k$. (Use $\mathrm{\pi }=\frac{22}{7}$)

Find the value of K

The area of the shaded region in the given figure is ${\mathrm{K} \mathrm{cm}}^2$

In the figure, find the perimeter of shaded region where $ADC, AEB$ and $BFC$ are semicircles on diameters $AC, AB$ and $BC$ respectively.

In figure, $AB$ and $CD$ are two diameters of a circle (with centre $O$) perpendicular to each other and $OD$ is the diameter of the smaller circle. If $OA=14 \mathrm{cm}$, If the area of the shaded region is $k {\mathrm{cm}}^2$, find $k$ .

Find the value of K

In the figure, $PQ=24 \mathrm{cm}$, $PR=7 \mathrm{cm}$ and $O$ is the centre of the circle. The area of the shaded region is ${\mathrm{K} \mathrm{cm}}^2$ . (Take $\mathrm{\pi }=3.14$)