Work out the circumference of this circle. take pi to be 3.142 and give your answer to 1 decimal place the radius is 4cm

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.

If rt is greater than ba, which statement must be true ?