Final answer:
To calculate the area of the triangle, use Heron's formula with the given side lengths. For the parallelogram, multiply the sides to find the area.
Step-by-step explanation:
To calculate the area of a triangle, we can use Heron's formula. First, calculate half the perimeter of the triangle as (8+15+17)/2 = 20. Next, use the formula: area = sqrt(s*(s-8)*(s-15)*(s-17)), where s is the semiperimeter. Plugging in the values, we get area = sqrt(20*(20-8)*(20-15)*(20-17)) = sqrt(20*12*5*3) = sqrt(1200) = 34.64 square cm.
To find the area of a parallelogram, multiply one of the sides by the perpendicular height. So the area of the parallelogram with sides of 6cm and 11cm is 6cm * 11cm = 66 square cm. Therefore, the correct answer is (A) Triangle Area: 60 sq cm, Parallelogram Area: 66 sq cm.