If the area of a circle measures 9pi cm2, what is the circumference of the circle in terms of pi

a) 3pi cm
b) 6pi cm
c) 9/4pi cm
d)9/2pi cm

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

22. catie is starting a babysitting business. she spent $26 to make signs to advertise. she charges an initial fee of $5 and then $3 for each hour of service. write and solve an inequality to find the number of hours she will have to babysit to make a profit. interpret the solution.!

What fraction is equivalent to 0.46464646··· a. 46⁄99 b. 46⁄999 c. 46⁄100 d. 23⁄50