Question

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6. A medicine capsule is in the shape of a
cylinder with two hemispheres stuck to each
of its ends (see Fig. 13.10). The length of
the entire capsule is 14 mm and the diameter
of the capsule is 5 mm. Find its surface area.​

Answer 1

Answer:

length = 14mm = 14÷1000= 0.014m

diameter=5mm = 5÷1000 = 0.005 m

radius= d÷2 = 0.005÷2= 0.0025

Formula

A=2πrh+2πr2

=(2×3.14×0.0025×0.014) + ( 2×3.14×0.0025×0.0025)

=0.0002198 + 0.00003925

A=0.00025905m2