Answer:
No; in step 2 he incorrectly evaluated the power to 64 instead of 16
Step-by-step explanation:
The question is not complete, the steps taken by Raymond are not listed, but I would show you the correct way of calculating the surface area and you determine from where Raymond made a mistake.
Answer:
A cone is a shape in which a set of lines connect the top point which is a common point to its circular base. The surface area of a cone is given by:
[tex]A=\pi r(r+\sqrt{h^2+r^2} )=\pi r(r+l)=\pi r^2+\pi rl[/tex]
Where A is the surface area, r is the radius of the cone, h is the height of the cone and [tex]\sqrt{h^2+r^2}[/tex] is the length of the slant height of the cone.
Given that a cone has a diameter measure of 8 meters and a slant height of 20.5 meters. Therefore:
radius (r) = diameter/2 = 8 / 2 = 4 m
Slant height (l) = 20.5 m
The surface area is:
[tex]A=\pi r^2+\pi rl\\Substituting \ values:\\A=\pi *4^2+\pi *4*20.5\\=\pi *16+\pi *82\\=98\pi \ m^2\\=307.9\ m^2[/tex]
The power in step 2 is 16 not 64
Answer:
The correct answer on EDG-2020 is:
No; in step 1 he used the diameter measure instead of the radius.
Step-by-step explanation:
