Surface area of combined figures

Q.

There is a cylinder of base radius 3 cm and length 10 cm. Ram attaches a hemispherical attachment to each flat end of the cylinder having the same radius as the base radius of the cylinder. What is the surface area of the combined solid in $c{m}^2$ ?

1. 201

2. 302

3. 310

4. 400

Q.

Find the surface area of the given below figure having dimension in cm as shown.

1. $900c{m}^2$

2. $880c{m}^2$

3. $650c{m}^2$

4. $400c{m}^2$

Q.

Question 9
A wooden article was made by scooping out a hemisphere from each end of a solid cylinder, as shown in figure. If the height of the cylinder is 10 cm, and its base is of radius 3.5 cm, find the total surface area of the article.

Q. Question 3
A toy is in the form of a cone of radius 3.5 cm mounted on a hemisphere of same radius. The total height of the toy is 15.5 cm. Find the total surface area of the toy.

Q. The surface area of the given below figure having dimension in cm as shown is



Hint: Add individual areas of cone and cylinder

1. $880c{m}^2$
2. $900c{m}^2$
3. $650c{m}^2$

Q.

Find the surface area of the given below figure having dimension in cm as shown.

1. $650c{m}^2$

2. $400c{m}^2$

3. $900c{m}^2$

4. $880c{m}^2$

Q. The surface area of the given below figure having dimension in cm as shown is



Hint: Add individual areas of cone and cylinder

1. $880c{m}^2$
2. $900c{m}^2$
3. $650c{m}^2$

Q.

Find the area to be painted for the given object. All dimensions including answer options are in cm.(Take $\pi =\frac{22}{7}$)

1. 4070

2. 4224

3. 4884

4. 4730

Q. An oil funnel made of tin sheet consists of a 10 cm long cylindrical portion attached to a frustum of a cone. If the total height is 22 cm, the diameter of the cylindrical portion is 8 cm and diameter of the top of the funnel is 18 cm, find the area of the tin sheet required to make the funnel.

1. $700c{m}^2$
2. $525.25c{m}^2$
3. $781.86c{m}^2$
   
4. $724.25c{m}^2$

Q. An exhibition tent is in the form of a cylinder surmounted by a cone. The height of the tent above the ground is 85 m and the height of the cylindrical part is 50 m. If the diameter of the base is 168 m, find the quantity of canvas required to make the tent. Allow 20% extra for folds and for stitching. Give your answer to the nearest $m^2$ .

1. 60509

Q.

A military tent of height 8.25 m is in the form of a right circular cylinder of base diameter 30 m and height 5.5 m surmounted by a right circular cone of same base radius. Find the length of canvas used in making the tent, if the breadth of the canvas is 1.5 m.