Question

Write exact answer by typing of class 10 question . i will give brainiest to perfect answer 1) What is the area of an equilateral triangle whose side is r unit?  2) If the area of great circle of a hemisphere is 10cm^2, what is the total surface area?  3) the front yard of a house is trapezium shaped. What formula should be applied to find the area using standard symbols? 

Answer 1

Answer:

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