4)The diagram shows a circle inside a semicircle. The semicircle ABC has centre O and radius 9 cm. The circle has diameter OB. Calculate, in cm2, the shaded area.

Give your answer to 3 significant figures.

Josh has a rewards card for a movie theater he receives 15 points for becoming a rewards card holder he earns 3.5 points for each visit to the movie theater he needs at least 55 points to earn a free movie ticket which inequality can josh use to determine x, the minimum number of visits he needs to earn his first free movie ticket.

Divide. write in the simplest form. 4 1/6 divided by 10

Can someone explain to me how to do