A circle has a diameter of 46 cm. What is its radius?

Which letters from the table represent like terms? a and b b and c a and d b and d

Ineed the solution to this problem and the steps.

F. a fair coin is thrown in the air four times. if the coin lands with the head up on the first three tosses, what is the probability that the coin will land with the head up on the fourth toss? a. 0 b. 1/16 c. 1/8 d. 1/2