Area = 3 * 1/2 * 10 * 12 + 1/2 * 12 * 8 = 180 + 48 = 228 answer
When dividing decimals, you move them over until the denominator is a whole number, so 0.2 to 2. The divisor's decimal is also moved over, so 24.2 to 242.
Now we have 242/2. I think you can take it from there.
The answer would be 4.189 radians
