Circumference of a circle of diameter 5 cm is

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

Area of a right-angled triangle is 30 cm². If its smallest side is 5 cm, then its hypotenuse is

Circumference of a circle disc is 88 cm. Its radius is

Length of tape required to cover the edges of a semicircular disc of radius 10 cm is