Luppeee
Answered

Sam is placing rope lights around the edge of a circular patio with a diameter of 18 feet. The lights come in lengths of 54 inches.How many strands of lights does he need to surround the patio edge?

Verified Answer :

you can find the circumference of the circle with the circumference equals 2pir.
circumference=2pi9
circumference=18pi
circumference=56.55 feet
you can then turn the feet into inches by multiplying by 12
(56.55 feet)x(12inches/foot)=678.58 inches
then divide 678.58 inches by 54 inches to find how many light strands are needed.
(678.58 inches)/(54 inches/strand)=12.57 strands

boffeemadrid

Answer:

13

Step-by-step explanation:

It s given that Sam is placing rope lights around the edge of a circular patio with a diameter of 18 feet, thus

\(radius of the circular patio=\frac{Diameter}{2}\)

⇒\(radius=\frac{18}{2}=9feet\)

Now, circumference of the circular patio is given as:

\(C=2{\pi}r\)

\(C=2(3.14)(9)\)

\(C=56.52 feet\)

Now, we know 1 ft=12 inches, therefore 56.52 feet=678.24 inches.

\(Number of strands of light will be equal to=\frac{Circumference}{Length}\)

=\(\frac{678.24}{54}\)

=\(12.56\)

≈\(13\)

Thus, 13 number of strands are needed to surround the patio edge.

Related Questions