Question

In parallelogram PQRS, PQ=25 cm, QR= 39 cm
and diagonal PR = 56 cm. Find its area.​

Answer 1

Answer:

Step-by-step explanation:

Using heron's formula,

Diagonal SQ = 13 cm

             ⇒    s =

             ⇒    s =  = 27 cm

             ⇒      Area =

              ⇒ Area = 126

Area of parallelogram,

                 ⇒ Area = 252

          For distance,

                     ⇒ 126 = 0.5 x 21 x h

So, distance between the shorter sides is,

                      ⇒ h = 25.2 cm

                        

 Now,

                    ⇒ 126 = 0.5 x 20 x h

So, distance between the longer distances,

                     ⇒ h = 24 cm

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Answer 2

Answer:

area of parallelogram is 2184