Question

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 cm

2

Woooo... ​

Answer 1

total surface of area = csa of cylinder + area of circle + csa of cone

slant height = h Ka squire + r Ka square

214/10 + 07/10 squre

576/100 + 49/100

625 /100

root 25 / 10 Ka whole squre .

25/10

2.5 .

2 ×22/7 ×7/10 ×2.4 + 22/7 × 7/10×7/10 +22/7×7/10×25/10

common 22(2×24/10 +7/10+25/10

22(4.8/10 +0.7/10 +2.5/10 )

22(8.0/10 )

22×4/5

28/5

17.6 approximately

Answer 2

Answer:

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