Question

XXIII. Get the right pair of formulas. (A)The total surface area of a hemisphere (solid) (B) The volume of a hemisphere B 2/3 * pi * r ^ 3 (1) (2) 3pi * r ^ 2 (3) 2pi * r ^ 2​

Answer 1

$(A) Total\:surface\:area\: of\:hemisphere=3\pi{r}^{2}$

$(B)Total\:volume\:of\:hemisphere=\frac{2}{3}\pi{r}^{3}$

Answer 2

Given :    Total Surface area of Hemisphere , Volume

To Find : Correct formulas

Solution:

volume of hemisphere  = (2/3) π r³

Total Surface area of Hemisphere  = 3πr²

Curved surface area of of Hemisphere  = 2πr²

volume of sphere  = (4/3) π r³

Total Surface area of  sphere  = 4πr²

Curved surface area of of  sphere  = 4πr²

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