A unicycle tire can travel 7.85 ft. in on revolution. What is the area of the unicycle tire? Round answer to the nearest tenth.

4.9ft^2

Step-by-step explanation:

7.85 ft is the circumference of the tire (circle), so d = 7.85.

7.85/ = 2.5, the diameter is 2.5, so the radius is 1.25.

r^2 is the formula for the area, so *1.25^2 = 1.5625, which is 4.906, which rounded to the tenth is 4.9.

relating to or denoting a system of numbers and arithmetic based on the number ten, tenth parts, and powers of ten.

it alot will look like this 4.4

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.