mow many plants spaced every 6in are needed to surround a circular walkway with a 25 ft radius how do i set up and solved

Question

shane_b · Answer

Do you know how to get the circumference of a circle?

anonymous · Answer

Am an older person never did thi sin school am trying to learn

shane_b · Answer

Ok no problem.  The circumference of a circle is $$C=\pi d = 2 \pi r$$Where pi is about 3.14, d is the diameter, r is the radius.  Since the question gives you the radius you can use the formula:$$C=2 \pi r=2 *3.14*25ft=157ft$$Now convert the circumference which is in feet, to inches:
$$157.08ftft*\frac{12in}{ft}=1884in$$Once you have the circumference in inches all you need to do is divide it by 6 to determine how many intervals you'll have around the walkway.

shane_b · Answer

You could also skip the last part by simply doubling 157 since there is 2*6 inches per foot...that will also give you the answer of 314 plants.

anonymous · Answer

tanx