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The internal and external radii of …

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The internal and external radii of a semi- spherical cup are r₁ and r₂ respectively. The curved surface area of the cup is (a) \pi({r_{1}}^{2}+r_{2}^{2}) (c) 2\pi(r_{2}^{2}-r_{1}^{2}) (b 2\pi(r_{1}^{2}+r_{2}^{2}) (d) \pi({r_{2}}^{2}-{r_{1}}^{2})

    • Posted by Krishna Singh 1 year, 8 months ago

    CBSE > Class 09 > Mathematics
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