Question

How many flowers, spaced every 4 in., are needed to surround a circular garden with a 150-ft radius? Use 3.15 for (pie symbol)

Answer 1

2835 flowers

Explanation:

We need the circumference of the garden, with it's 150' radius. Circumference, C, is given by: C = 2
`\pi`r. I'll use
`\pi`=3.15, as you have requested, but it is actually closer to 3.14.

C = 2*(3.15)*150'

C = 945'

4 inches = 1/3 foot.

Every 1/3 of a foot of the circumference will have a flower. We can make this a conversion factor: 3 flowers/foot

Flowers = (945')*( 3 flowers/foot) = 2835 flowers