I need some help,
Find the surface area of the cone. Use 3.14 for π
This is a cone with a:
Radius 8in
Slant Height 7in
Actually, they do. Search google again: surface area of cone
See the formula that come up?
Area = π * radius(radius + √height^2 + radius^2 )
π is the symbol for pi which is 3.14
When you enter in the height and radius, google automatically calculates it for you and you should get 468.23
I have @rose Marie,
It never works because they dont want to use 3.14 as pi
To find the surface area of a cone, we need to calculate the sum of the lateral surface area and the base area.
First, let's calculate the lateral surface area of the cone. The lateral surface area can be found using the formula:
Lateral Surface Area = π * radius * slant height
Given:
Radius (r) = 8in
Slant Height (l) = 7in
π (pi) = 3.14
Lateral Surface Area = 3.14 * 8in * 7in
Lateral Surface Area = 3.14 * 56in²
Lateral Surface Area ≈ 175.84in²
Next, let's find the base area of the cone. Since the base of a cone is a circle, its area can be calculated using the formula:
Base Area = π * radius^2
Given:
Radius (r) = 8in
π (pi) = 3.14
Base Area = 3.14 * (8in)^2
Base Area = 3.14 * 64in²
Base Area ≈ 201.06in²
Now, we can find the total surface area by adding the lateral surface area and the base area:
Total Surface Area = Lateral Surface Area + Base Area
Total Surface Area ≈ 175.84in² + 201.06in²
Total Surface Area ≈ 376.9in²
Therefore, the surface area of the cone is approximately 376.9 square inches.
Search Google: Surface area of Cone
@Rose Marie
Thank you, i was trying to do that but apparently i was on the ( Find height ) Part of it, and it wont let me calculate it with a slant height of 7 and a radius of 8, sorry bout that. And thank you!
Ah, ok. had me confused a little but glad to have helped lol
school *rolls eyes*