one side of a rectangular field is 16 m and one of its diagonal is 18 m . find the area of the field .
"solution other side = √ ( 18 ) 2 - ( 16 ) 2 = √ 324 - 256 = √ 68 = 8.2 m . ∴ area = ( 16 x 8.2 ) m 2 = 131.2 m 2 . answer e"
rectangle_area(16, sqrt(subtract(power(18, const_2), power(16, const_2))))