sammscott7866 sammscott7866
  • 11-06-2021
  • Mathematics
contestada

A cone has a radius of 12 inches and a slant height of 20 inches. What is the approximate surface area of the cone?

Respuesta :

fichoh
fichoh fichoh
  • 11-06-2021

Answer:

2009.6 in²

Step-by-step explanation:

The surface area, SA of a cone is obtained using the formular :

SA = πr² + πrl

Where ; r = Radius = 20 inches ; l = slant height = 12 inches

SA = π*20² + π*20*12

SA = 400π + 240π

Take π = 3.14

SA = (400*3.14) + (240*3.14)

SA = 1256 + 753.6

SA = 2009.6 in²

Answer Link

Otras preguntas

Angles A and B are complementary. A is y°. What is the measure of angle B?
In a class experiment, Debra finds that the probability that a student has more than three siblings is 3/25 . If the school population is 350, how many students
Hw 31 surface area of pyramids and cones
What would a paragraph with the title "How to Enjoy and Excel in High School" most likely be about?all the different sports teams one can join in high schoolall
a uniform electric field E=15 N/C points downwards. A particle with charge q=-0.15 C is placed in the electric field. What is the magnitude and direction of the
equation find three points that solve the equation then plot on the graph -3y = 5x -7
please help!!!! ( 14 points)
Freshman Algebra, I need to simplify it[tex] \frac{ - 1}{4} (v {q}^{4} )( - 8 {v}^{3} q {)}^{2} [/tex]​
What’s this answer to this problem ?
IN A QUIZ!!! The first thing you should do when breaking a multisyllabic word into parts is to A. say each part out loud slowly. B. read the word out loud th