Question

Help!!!!!!!
Randy's circular garden has a radius of 4 feet. He wants to put a fence around the entire garden.
How much fencing will he need?
(a)
A 16 feet of fencing
B 20.4 feet of fencing
© 25.12 feet of fencing
D 37.16 feet of fencing
<
(b)
If fencing material costs $0.75 per foot, how much will it cost Randy to build the fence?
$

Answer 1

Answer:

C) 25.12 feet and $18.84

Step-by-step explanation:

C = 2(pi)(r)

Multiply feet by cost per foot

Answer 2

Answer:

(a)25.12 (b)$18.84

Step-by-step explanation:

(a) The circumference or perimeter of a circle is $2\pi r$. Since we know that the radius of the garden is 4 we find that the circumference of the garden is $8\pi$, but we can round $\pi$ to 3.14, which gives us C 25.12 feet of fencing.

(b) We can plug in the circumference of the circle which we found in the first question into the equation $circumference\times \0.75$ which gives us $25.12\times \0.75$ or $18.84.