Math, asked by chumeichumeiwenkangt, 7 months ago

Q7. Find the volume and the curved surface area of a sphere of radius 5.6 cm
(2m)

08. A cylindrical pillar is 40 cm in diameter and 3.5 cm in height. Find the cost of painting the curved
surface of the pillar at the rate of Rs. 12.50 per m².
(2 m)​

Answers

Answered by kalashjain03
2

Answer:

Given:

H=3.5 m, R=250=25 cm =10025=0.25 m

⇒CSA=2πrh=(2×722×0.25×3.5) m2

=5.5 m2

⇒Cost of painting 1 m2 area = Rs.12.50

⇒Cost of painting 5.5 m2 area 

= Rs.5.5×12.50

= Rs.68.75

Attachments:
Answered by kirankumarkkiranak45
0

Answer:

=394.24 it is the ans mof first

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