The formula is x h 2 y k 2 r 2. Area of a circle A p r 2 p4 D2 07854. Insert the value for the radius and perform the remaining calculations as follows.
Surface Area of Hemisphere formula.
The circumference C of a circle is a measure of the distance around the circle. Generally you can round this infinite number to 314 or 314159 the accepted fraction is 227. Xt r cost j yt r sint k. Radius of a circle r 15 cm.