If the simple interest rate is 5%p. a. , how long does it take for the amount to become twice the principal

Savannah is painting a striped background for a mural on a wall that is 1515 yards long. she wants a total of 9696 stripes that are all the same width. which calculation should savannah use to decide how wide to make each stripe?

Draw a scaled copy of the circle using a scale factor of 2

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