. A unit is a ……….. quantity. 2.standard Mass is a ……..quantity. 3.basic 4.Area is a ……….quantity. 4.derived 5.The British system is also called the ……. system. 5.FPS Length , mass and ……. called basic

. 2 B. 3 C.5 D. 48 E. 12 OAB is a sector of a circle with centre O, radius 8 cm and a perimeter 22 cm. Then the area of sector, in square cm is A. 6 B. 28 C. 24 D. 48 E. 12 The area , in cm2 , of a circle