Which expression can be used to calculate the area of a circle? Pi times diameter

2 times pi times radius

Pi times diameter times diameter

Pi times radius times radius
also give a real answer help me

What term makes it inconsistent y=2x - 4

Ahiker stands at an unknown elevation before he ascends 2 miles up a mountain to an elevation of 9 miles. find the elevation of the hiker before his ascent.

Fred has a spinner that is split into four equal sections: red, blue, green, and yellow. fred spun the spinner 688 times. which of the following would be a good estimate of the number of times the spinner lands on the green section? a. 269 b. 603 c. 344 d. 189