Mathematics, 31.03.2020 21:56 hqlego6882
Ellis is painting wooden fenceposts before putting them in his yard. They are each 6 feet tall and have a diameter of 1 foot. There are 12 fenceposts in all. How much paint will Ellis need to paint all the surfaces of the 12 fenceposts? Use 3.14 for π, and round your answer to the nearest hundredth. Provide an explanation and proof for your answer to receive full credit.
My answer so far:
First, what I want to do is get all the measurements in the same form. Since the radius of 1 ft diameter is 6 inches, I need to convert the height into inches. To do this, I multiply 6*12=72. So, each post is 72 inches tall. Now, I use the surface area formula for a cylinder. Then I plug in the numbers from this problem to get 2(3.14)(36)+2(3.14)(6)(72). Now, I do all this multiplying and adding to get 2,939.04 square inches
I NEED HELP PLEASE
Answers: 2
Other questions on the subject: Mathematics
Mathematics, 22.06.2019 02:00, ehaynie
Brittany has designed four different birdcages, each with the same volume: a square pyramid, a cylinder, a cone, and a sphere. the zoo wants to use one of brittany’s designs but plans to change the volume of the cage. find the design change that would result in the birdcage with the greatest volume. a.) increase the area of the base of the square pyramid by a factor of ten. b.) increase the height of the cylinder by a factor of ten. c.) increase the radius of the cone by a factor of ten. d.) increase the radius of a sphere by a factor of ten.
Answers: 1
You know the right answer?
Ellis is painting wooden fenceposts before putting them in his yard. They are each 6 feet tall and h...
Questions in other subjects:
Biology, 10.07.2019 12:00
History, 10.07.2019 12:00
Spanish, 10.07.2019 12:00
