the area of sector of a circle whose radius is 12 metro and whose angle at the center is 39 ° is ?
"39 / 360 * 22 / 7 * 12 * 12 = 49 m 2 answer : c"
multiply(multiply(power(12, const_2), divide(add(multiply(const_2, const_10), const_2), add(const_4, const_3))), divide(39, divide(const_3600, const_10)))