Question

13. From a solid cylinder whose height is 2.4 cm and diameter 1.4 cm, a conical cavity of the
same height and same diameter is hollowed out. Find the total surface area of the remaining
solid to the nearest cm2
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Answer 1

Ankasjdlfkja;lskdjf;lajs;d

Step-by-step explanation:

Answer 2

Answer:

5.81π

Step-by-step explanation:

• total surface area of remaining solid=CSA of cylinder+area of base circle+CSA of cone
• =2πrh+πr²+πrl

• =πr(2h+r-l)
• =πו7(2×2.5+.7+2.6)
• =2.17π