Question

two adjacent side of a parallelogram are of length 5cm and 7cm and the diagonal connecting the end of these sides is of length 9 cm. find the area of parallelogram​

Answer 1

Answer:

Step-by-step explanation: first use herons formula to find the area for the triangle formed by the two adjacent sides and diagonal, which comes out to be approximately 17.4. Now twice that area will give you the area of parallelogram, because parellolgram is nothing but two equale triangles