use A=sqrt(s*(s-a)*(s-b)*(s-c)) for area of a triangle which is 774.5966 hence area of parallelogram is 2*774.5966 or 1549.1933 sq m
The lengths of two adjacent sides of a parallelogram are 8 and 15, respectively. Find the sum of squares of the lengths of the two diagonals.
Trapezoid as shown has two parallel sides with length 5 and 15 & two diagonals with length 12 and 16. What is its area?
A given parallelogram has sides measuring 7 and 9, and both its diagonals have integer lengths. Find the sum of all possible products of the lengths of the diagonals.