Question

Two sides of a parallelogram are 20cm and 15 cm. If the altitude corresponding to the side of length 12 cm is 15cm, find the altitude corresponding to the other side.

Answer 1

ABCD is a llgm
AB=20cm
CD=15cm
altitude on CD = 12cm
area of llgm= base×altitude
= CD×EF=AB×GH
=15×12=20×GH
GH = 9cm