A K Upadhyay and S Upadhyay Solutions for Chapter: Surface Areas and Volumes, Exercise 6: TEST YOURSELF

The base radius of a cone is $5 \mathrm{c}\mathrm{m}$ and its height is $12 \mathrm{c}\mathrm{m}$. It slant height is

The circumference of the base of a $8 \mathrm{m}$ high conical tent is $\frac{264}{7} \mathrm{m}$. The area of canvas required to make the tent is :

The number of litre of milk a hemispherical bowl of radius $10.5\mathrm{c}\mathrm{m}$ can hold is

The radius of a sphere is $10 \mathrm{cm}$. If its radius is increased by $1 \mathrm{cm}$, the volume of the sphere is increased by

A hemispherical bowl is made of steel, $0.25 \mathrm{c}\mathrm{m}$ thick. The inner radius of the bowl is $5 \mathrm{c}\mathrm{m}$. Find the outer curved surface area of the bowl.

The dimensions of a prayer hall are $20 \mathrm{m}\times 15 \mathrm{m}\times 8 \mathrm{m}$. Find the cost of painting its walls $@\mathrm{₹}10/-\mathrm{p}\mathrm{er} {\mathrm{m}}^2$.

A river $3 \mathrm{m}$ deep and $40 \mathrm{m}$ wide, is flowing al the rate of $2 \mathrm{k}\mathrm{m}/\mathrm{h}\mathrm{r}$. How much water will fall into the sea in a minute.

A village having a population of $4000$ requires $150 \mathrm{L}$ of water per head per day. It has a tank measuring $20 \mathrm{m}\times 15 \mathrm{m}\times 6 \mathrm{m}$. For how many days, the water of the tank will be sufficient for the village.