What is the circumference of this circle? Use π ≈ 3.14. Round your answer to the nearest tenth of a centimeter.
Diamter equals 15cm

Question

What is the circumference of this circle? Use π ≈ 3.14. Round your answer to the nearest tenth of a centimeter.
Diamter equals 15cm

johnweldon1993 · Answer

Circumference = 2pi * r

R = radius = Half the diameter...so Diameter = 15cm so half that is 7.5cm

Now just plug that into the formula above

$$\large \text{circumference} = 2\pi*7.5cm$$

lieutenantgeneral · Answer

Thanks

lieutenantgeneral · Answer

A ramp leads up to a building. The top of the ramp is 5 feet above the ground, and the bottom is 15 feet from the building as shown.

 

What is the length of the ramp? Round your answer to the nearest tenth of a foot.

lieutenantgeneral · Answer

height 5cm lenght 15cm

anonymous · Answer

no it's $$2 \pi r ^{2}$$

johnweldon1993 · Answer

|dw:1393863702339:dw|

johnweldon1993 · Answer

@LadyKatsaTheGraceling 


Circumference = 2pi * radius

Area = pi * r^2

Somehow you are combining the two equations

lieutenantgeneral · Answer

don't combine those are 2 different questions

anonymous · Answer

Well according to the math website I got the formula from…

johnweldon1993 · Answer

@LieutenantGeneral You would use Pythagorean theorem here

The Hypotenuse (length here) is equal to

$$\large \sqrt{5^2 + 15^2}$$

johnweldon1993 · Answer

Please post that line @LadyKatsaTheGraceling so I may see...

johnweldon1993 · Answer

link* sorry

lieutenantgeneral · Answer

i about to close the question

anonymous · Answer

https://xkcd.com/1184/