joan incorrectly finds the volume of a sphere with a diameter of 9cm to be 9156.24cm³. her work is shown. find and correct joans mistakes. then, find the correct volume of the sphere. use 3.14 for pi.

In triangle opq right angled at p op=7cm,oq-pq=1 determine the values of sinq and cosq

Three cylinders have a volume of 2836 cm^3. cylinder a has a height of 900 cm. cylinder b has a height of 225 cm. cylinder c has a height of 100 cm. find the radius of each cylinder. use 3.14 as an approximate for π

Write an expression that has three terms and simplifies to 4x - 7. identify the coefficient(s) and constant(s) in your expression