Question: two adjacent sides of a parallelogram are 10 cm and 12 cm?
Answer: As parallelogram consists of two equal ∆s by the diagonal=> The area of the parallelogram is twice the area of the ∆ contained by the adjacent sides & the diagonal. Hence find the area of ∆ with sides 10,12 & 24. The given such dimensions is inelligible for a ∆ as 10+12<24.