the area of sector of a circle whose radius is 18 metro and whose angle at the center is 42 â ° is ?
"42 / 360 * 22 / 7 * 18 * 18 = 118.8 m 2 answer : d"
multiply(multiply(power(18, const_2), divide(add(multiply(const_2, const_10), const_2), add(const_4, const_3))), divide(42, divide(const_3600, const_10)))