In Fig. 9.22 ∆MNO is a right-angled triangle. Its legs are 6 cm and8 cm long. Length of perpendicular NP on the side MO is

Given ∆MNO is a right-angled triangle

According to Pythagoras theorem

=

= +

= 36 + 64

= 100

MO = 10cm

Area of ∆MNO =

⇒ ×NO = ×NP

⇒ ×8 = ×NP

⇒ NP =

⇒ NP = 4.8cm