8a. History: A typical stone on the lowest level of the Great Pyramid in Egypt was a rectangular prism 5 feet lonng, by 5 feet wide, by 6 feet deep and weighed 15 tons. What is the volume of the average stone? (Note--give volume answer in numbers) *

8b. How much did one cubic foot of the stone weigh? (Hint divide the weight by the volume and find the tonage of one cubic foot of the stone)

George writes the mixed number as sum and uses the distributive property 1/2.-2/5=1/2-2+2/5=1/2

For every corresponding pair of cross sections, the area of the cross section of a sphere with radius r is equal to the area of the cross section of a cylinder with radius and height 2r minus the volume of two cones, each with a radius and height of r. a cross section of the sphere is and a cross section of the cylinder minus the cones, taken parallel to the base of cylinder, is the volume of the cylinder with radius r and height 2r is and the volume of each cone with radius r and height r is 1/3 pie r^3. so the volume of the cylinder minus the two cones is therefore, the volume of the cylinder is 4/3pie r^3 by cavalieri's principle. (fill in options are: r/2- r- 2r- an annulus- a circle -1/3pier^3- 2/3pier^3- 4/3pier^3- 5/3pier^3- 2pier^3- 4pier^3)

Harry owes the bank money. to repay his debt, he paid $150 back to the bank each month. after 10 months, his remaining debt was $6900. what was the original amount of harry's debt? how long did it take harry to pay back his entire debt?