# Surface Areas and Volumes chap 13

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## Presentation Transcript

### SURFACE AREAS AND VOLUMES:

SURFACE AREAS AND VOLUMES CHAPTER - 13 EXERCISE - 13.3

### Take =22/7, unless stated otherwise.QUESTION 1:- A metallic sphere of radius 4.2 cm is melted and recast into the shape of a cylinder of radius 6 cm. Find the height of the cylinder.:

Take =22/7, unless stated otherwise. QUESTION 1:- A metallic sphere of radius 4.2 cm is melted and recast into the shape of a cylinder of radius 6 cm. Find the height of the cylinder.

### QUESTION 2:- Metallic spheres of radii 6 cm, 8 cm and 10 cm, respectively, are melted to form a single solid sphere. Find the radius of the resulting sphere.:

QUESTION 2:- Metallic spheres of radii 6 cm, 8 cm and 10 cm, respectively, are melted to form a single solid sphere. Find the radius of the resulting sphere.

### QUESTION 3:- A 20 m deep well with diameter 7 m is dug and earth from digging is evenly spread out to form a platform 22 m by 14 m. Find the height of the platform.:

QUESTION 3:- A 20 m deep well with diameter 7 m is dug and earth from digging is evenly spread out to form a platform 22 m by 14 m. Find the height of the platform.

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