Question

the diameter of the sphere is 28cm find the cost of painting it all around at Rs.0.10per sq cm​

Answer 1

Answer:

First of all,

        Radius of sphere:-14 cm

    Surface Area of Sphere = 4 π r^2

                                           = 4 x 22/7 x (14)^2

                                           =2464 cm

Then,

       Cost of Painting it all around is = area * per sq cm​ cost

                                                           =(2464 * 0.10)

                                                          =Rs.246.4

I hope it helps.

Step-by-step explanation: