Find the length of the diagonal of rectangle whose length is 8 cm and width is 6 cm.
Given: Length, AB=8 cm
Breadth, BC=6 cm
By Pythagoras theorem, In triangle ABC, we have
Diagonal, AC2=AB2+BC2
AC=√82+62
AC=√64+36=√100=10
Find the area of a rhombus whose side is 6 cm and whose altitude is 4 cm. If one of its diagonals is 8 cm long, find the length of the other diagonal.