Math, asked by jayashashanth, 4 months ago

A hemispherical bowl has radius of its rim equal to 2-1 cm. The total capacity of 20 such bowls is nearly equal to

(a) 388 cm

(b) 360 cm

(e) 430 cm

(d) 424 em​

Answers

Answered by ItxRohityadavx
4

Inner radius=24.7cm

Thickness=0.3cm

Outer radius=(24.7+0.3)cm

=25cm

outer surface area of bowl=2πr

2

=2×3.14×25×25

=3925cm

2

cost of polishing 10cm

2

surface area=Rs.4

∴ cost of polishing 3925cm

2

surface area=

10

4×3925

=Rs.1570

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