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Learn how to calculate the curved and total surface area of a hemisphere using the formulas 2πr2 and 3πr2, respectively. See a solved problem with radius 4 cm and watch videos on related topics.
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The following list shows the formulas that are used to find the total surface area, the curved surface area of a hemisphere, and the total surface area of a hollow hemisphere. The total surface area of a hemisphere = 3πr 2 , where 'r' is the radius of the hemisphere.
Learn how to calculate the curved surface area, base area and total surface area of a hemisphere using formulas. Find real-life examples, solved problems and practice questions on area of hemisphere.
Base surface area of a hemisphere: Ab = π × r². Cap surface area of a hemisphere: Ac = 2 × π × r². Total surface area of a hemisphere: A = 3 × π × r². Surface to volume ratio of a hemisphere: A / V = 9 / (2 × r). The area of a hemisphere formula (for the total area) can then be derived from the above equations. We can obtain even ...
Learn how to calculate the surface area of a hemisphere, a three-dimensional shape that is half of a sphere. Find the formulas for the curved surface area, the base area, and the total surface area of a hemisphere, and see solved examples and practice problems.
To calculate the surface area of a sphere with radius r, r, we can use the formula. \text {Surface area of a sphere}=4\pi {r}^ {2}. Surface area of a sphere = 4πr2. We can then adapt this formula, to find the curved surface area of the hemisphere we need to halve the surface area of the sphere.
Formula for Surface Area of Hemisphere. (i) Curved Surface Area of Hemisphere. Curved Surface Area (CSA) = 2πr2 2 π r 2. (ii) Total Surface Area of Hemisphere. Total Surface Area (TSA) = 3πr2 3 π r 2. Example : Find (i) the curved surface area and (ii) the total surface area of a hemisphere of radius 21 cm. Solution : Here, radius = 21 cm.
