Question

A solid cylinder of radius 2 cm and height 3 cm is placed over other cylinder of same height and radius. The total surface area of the shape so formed is.

Answer 1

Answer:

Shape formed is cylinder. TSA = 100.48 cubic cm

Step-by-step explanation:

r = 2 cm

h = 3 + 3 = 6 cm

TSA = 2πr(h + r)

       = 2 * 3.14 * 2 (6 + 2)

       = 100.48 cubic cm

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Answer 2

Step-by-step explanation:

Total Height =3+3 =6 cm

radius =2 cm (remains same)

Curved Surface area=

$2\pi \: rh$

=2×22/7×2×6 cm²

=22×24/7

= 75.43cm²

Surface area of top and bottom region,

.

$= 2\pi \: {r}^{2}$

=2×22/7×2² cm²

=8×22/7

=25.14 cm²

Total Surface Area=75.43+25.14 cm²

=100.57cm²