# Surface Area of Hemisphere

## Trending Questions

**Q.**

The ratio of the total surface area of a sphere and a hemisphere of the same radius is

2 : 1

3 : 2

4 : 1

4 : 3

**Q.**

A wooden toy is in the form of a cone surmounted on a hemisphere. The diameter of the base of the cone is 16 cm and its height is 15 cm. Find the cost of painting the toy at Rs. 7 per 100cm2

**Q.**

What length of tarpaulin 3 m wide will be required to make a conical tent of height 8 m and base radius 6m? Assume that the extra length of material that will be required for stitching margins and wastage in cutting is approximately 20 cm.[Use π=3.14]

**Q.**

A hemispherical bowl made of brass has inner diameter 10.5 cm. Find the cost of tin-plating it on the inside at the rate of Rs. 32 per 100 cm2.

**Q.**

The total surface area of a hemisphere of radius r is

2πr2

3πr2

4πr2

πr2

**Q.**

A storage tank consists of a circular cylinder with a hemisphere adjoined on either end. If the external diameter of the cylinder be 1.4 m and its length be 8 m find the cost of painting it on the outside at the rate of Rs. 10 per m2

**Q.**

A hemi- spherical dome of a building needs to be painted. If the circumference of the base of the dome is 17.6 m, find the cost of painting it, given the cost of painting is Rs. 5 per 100cm2.

**Q.**

The radius of a hemispherical balloon increases from 6 cm to 12 cm as air is being pumped into it. The ratio of the surface areas of the balloons in two cases is

(a) 1:4 (b) 1:3 (c) 2:3 (d) 1:2

**Q.**

Find the total surface area of a hemisphere of radius 10 cm.

**Q.**

Find the total surface are of a hemisphere and a solid hemisphere each of radius 10 cm.

**Q.**

The dome of a building is in the form of a hemisphere. Its radius is 63 dm. Find the cost of painting it at the rate of Rs. 2 per sq. m.

**Q.**

A cylinder of same height and radius is placed on the top of a hemisphere. Find the length of the shape be 7 cm.

**Q.**What is the volume of the hemisphere whose radius is r?

- 2πr3
- 43πr3
- 23πr3
- 4πr3

**Q.**

A conical tent is $10m$ high and the radius of its base is$24m$. Find slant height of the tent and cost of the canvas required to make the tent, if the cost of $1{m}^{2}$ canvas is $Rs.70$.

**Q.**

What is the total surface area of a closed hemisphere?

4πr2

2πr2

43πr2

3πr2

**Q.**

Question 6

Find the radius of a sphere whose surface area is 154 cm2.

[Assume π=227]

**Q.**Question 2

A vessel is in the form of a hollow hemisphere mounted by a hollow cylinder. The diameter of the hemisphere is 14 cm and the total height of the vessel is 13 cm. Find the inner surface area of the vessel.

**Q.**Question 5

How many liters of milk can a hemispherical bowl of diameter 10.5 cm hold?

[Assume π=227]

**Q.**What's the relation between the curved surface area of a hemisphere and the total surface area of hemisphere?

- CSA=23×TSA
- CSA=32×TSA
- TSA=23×CSA
- CSA=43×TSA

**Q.**

A vessel is in the form of a hollow hemisphere mounted by a hollow cylinder. The diameter of the hemisphere is $14cm$ and the total height of the vessel is $13cm.$ Find the inner surface area of the vessel.

**Q.**

Find the volume of a sphere whose surface area is $154c{m}^{2}$. (Assume $\pi =\frac{22}{7}$)

**Q.**

A hemispherical bowl is made of steel, 0.25 cm thick.The inner radius of the bowl is 5 cm.Find the outer curved surface area of the bowl.

**Q.**How many litres of milk can a hemispherical bowl of diameter 10.5 cm hold?

**Q.**

A hemispherical bowl made of brass has inner diameter of 10.5 cm. Find the cost of tin - plating it on the inside at the rate of Rs. 4 per 100cm2.

**Q.**The hemispherical dome of a building needs to be painted. If the circumference of the base of dome is 17.6, find the cost of painting it, given the cost of painting is Rs. 5 per 100 cm2.

**Q.**Find the total surface area of a hollow hemisphere whose outer and inner radii are 4.2 cm and 2.1 cm respectively.

**Q.**A hemisphere bowl is made of steel, 0.25 cm thick. the inner radius of the bowl is 5 cm. Find the outer curved surface area of the bowl.

**Q.**The inner curved surface area of a hemispherical dome of a building needs to be painted. If the circumference of the base is 17.6 m, find the cost of painting it at the rate of Rs.5 per sq.m

- Rs.246.40
- Rs.24.40
- None of these
- Rs.26.40

**Q.**A vessel is in the form of a hollow hemisphere. The diameter of the hemisphere is 14cm. Find the inner surface area of the vessel.

**Q.**Find the difference between total surface area & curved surface area of a hemisphere of radius 21 cm.

- 1376 cm2
- 1386 cm2
- 1396 cm2
- 1404 cm2