1.

Surface area of hemisphere

Answer» 3πrsquare
Total surface area of the hemisphere– While calculating the total surface area of a hemisphere, we need to consider the base of the hemisphere which is circular in shape. Thus the total surface area of a hemisphere is equal tototal surface area= curved surface area + area of the base circle= 2πr2+πr2= 3πr2Area of Hollow Hemisphere\xa0= Area of External Hemisphere – Area of Internal Hemisphere


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