I need help on thistf

Brainlest answer can you find the area and circumference of a circle given the radius or diameter? if its yes or no explain why

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?