Question

21.18. In a parallelogram if adjacent sides are 10 cm and 20 cm, then find its perimeter. *​

Answer 1

Answer:

The perimeter of the parallelogram is 60 cm

Step-by-step explanation:

Given : Adjacent sides of a parallelogram are 10 cm and 20 cm

           Perimeter = ?

Solution : Perimeter of a parallelogram = 2 x ( sum of adjacent sides )

                                                                = 2 x ( 10 + 20 )

                                                               = 2 x 30

                                                               = 60 cm