the length of minute hand of a clock is 5.4 cm . what is the area covered by this in 20 minutes
"area of circle is pi * r ^ 2 but in 20 minutes area covered is ( 20 / 60 ) * 360 = 120 degree so formula is pi * r ^ 2 * ( angle / 360 ) = 3.14 * ( 5.4 ^ 2 ) * ( 120 / 360 ) = 30.54 cm ^ 2 answer : d"
multiply(divide(add(multiply(const_2, 20), const_2), add(const_3, const_4)), multiply(multiply(5.4, 5.4), divide(multiply(const_1, const_60), multiply(const_100, const_3_6))))