Jon walked 8 miles in 3 hours. jim walked 14 miles in 5 hours. are these rates in proportion? if no, who walked faster?

The circumference of a redwood tree trunk is 20π ft, and it is 100 ft tall. what is the approximate volume of the redwood tree trunk? 1,000π ft3 10,000π ft3 4,000π ft3 40,000π ft3

Cone a has a surface area of 384 ft2 and cone b has a surface area of 96 ft? . what is the ratio of their volume?

The area of a circle is equal to 1 dm². find the radius of the circle.