Question

④ A right circular cylinder of radius R = 7cm just encloses a sphere (see Fig.). Find

(i) surface area of the sphere, (ii) curved surface area of the cylinder​

Answer 1

Answer:

1. 616 cm sq.

2.

Step-by-step explanation:

1.  radius of sphere = 7 cm

surface of the sphere = 4 pie R SQ.

=4 multiply by 22 by 7 into 7 sq.

= 616 cm sq.

2.  diameter of sphere = height of cylinder = 14 cm

    curved surface area of cylinder = 2 pie r h

     = 2 into 22 by 7 into 7 into 14

    =616 cm sq.