Question

a wooden toy is in the form of a cone surmounted on a hemisphere. The diameter of the base of the cone is 6cm and it's height is 4cm. find the cost of painting the toy at the rate of
Red. 5 per 1000cm2

Answer 1

SINCE THE AREA TO BE PAINTED IS THE C.S.A. OF THE TOY, THEREFORE WE NEED TO FIND THE C.S.A OF TOY.

C.S.A OF TOY = C.S.A OF CONE + C.S.A OF HEMISPHERE

= pi * r * l + 2 * pi * r2

= 22/7  * 3  cm *  5  cm +  2 * 22/7 * 3 cm * 3 cm  { IN A CONE, VALUE OF "l"  =  under root  r2 + h2 }

= 47.1 cm2 + 56.52 cm2

= 103.62 cm 2

THEREFORE, C.S.A OF TOY IS 103.62 CM2

Answer 2

Answer:

Step-by-step explanation: