Question

ABCD is a parrellelogram in which AD = 21 cm, DH = 18 cm and DK = 27 cm. The length of side AB is

Answer 1

Answer: ab    = 31.5 cm

step-by-step explanation:

so area of parallelogram = base × height

                                         = 21  ×27

                                        = 567cm²

now let AB the base

so, ab ×18 = 567

     ab   = 567/18

  ab    = 31.5 cm

hope it helps you