Sign in Start free

CBSE Class 10 Maths (Basic) 2023 · Paper 430/C/1 · Question 7

Surface Areas and Volumes 1 mark Medium

Total surface area (internal and external) of a hemispherical bowl having radii

r_{1}

and

r_{2}

(

r_{2} > r_{1}

) is:

Hemispherical bowl with inner radius r1 and outer radius r2

(a) $2 π (r_{1}^{2} + r_{2}^{2})$
(b) $π (r_{1}^{2} + r_{2}^{2})$
(c) $3 π r_{2}^{2} + π r_{1}^{2}$
(d) $3 π r_{1}^{2} + π r_{2}^{2}$

Answer

(c)

3 π r_{2}^{2} + π r_{1}^{2}

🔒 Step-by-step solution

Sign up free to see every step of how it is worked out.

Sign up free Log in

From the board paper

CBSE Class 10 Maths (Basic) 2023 · Paper 430/C/1, Question 7 — all 38 questions with answers →

More questions from Surface Areas and Volumes

Class 10 Maths — every question with an expert-verified, step-by-step solution.

All 393 questions on Surface Areas and Volumes → Browse all Maths chapters →