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ya find the area .....of this cylindrical penholder
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Answer:
R=3cm, H=10.5cm
⇒Surface area = Curved Surface Area + Base Area
=2πrh+πr ^2
=2×22/7 ×3× 10.5/10 + 22/7 ×3×3cm ^2=198+198/7cm ^2
= 1584/7 cm^2
Step-by-step explanation:
Area of cardboard sheet used by competitor = 1584/7 cm ^2
⇒Area of cardboard sheet used by 35 competitors =
1584/7 ×35
=7920cm ^2
Is it ok now
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