Please answer it!

Two fixed sides of a triangle are 21.6 m and 30 m in length and the angle between them is increasing at a rate of 0.08 rad/s. Find the rate at which the area of the triangle is increasing when the angle between the sides of fixed length is 7/3 Note: Write only the numerical value of the rate, the units are already written. Write the exact answer not the decimal approximation (for example write ~ not 0.8). Answer. The area of the triangle is increasing at a rate of Em2 /s