What is the exact circumference of a circle with a radius of 15 cm? 10π cm 15π cm 30π cm 60π cm

Any greatly appreciated! you in advance. jody bought 20 shares of amazon at the close price of $121.00. she bought 20 more shares a year later at the price of $127.00. two years later she's sold all of her shares at the price of $133.00. her broker charges $50 for each transaction. after all of these transactions how much money did jody make? a.$65.00b.$5288.00c.$210.00d.$310.00

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

What is the ratio for the surface areas of the cones shown below, given that they are similar and that the ratio of their radil and altitudes is 4: 3? 23