BAC is a sector of a circle, radius 20 cm, whose centre is at A. Angle BAC = 43º.
Calculate the area of the sector BAC

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

The mean of 10 values is 19. if further 5 values areincluded the mean becomes 20. what is the meanthese five additional values? a) 10b) 15c) 11d) 22