Respuesta :
Answer:
113 cm²
Step-by-step explanation:
Given:
Diameter of the cone (d) = 8 cm
Slant height of cone (l) = 5 cm
The value of pi is approximated, [tex]\pi=3.14[/tex]
We know that, radius of half of diameter.
Radius = Diameter ÷ 2 = 8 ÷ 2 = 4 cm
Now, total surface area of a cone is given as:
[tex]SA=\pi r(r+l)[/tex]
Plug in the given values and solve for surface area, 'SA'. This gives,
[tex]SA=3.14\times 4(4+5)\\\\SA=12.56\times 9\\\\SA=113.04\approx 113\ cm^2[/tex]
Therefore, the total surface area of the cone is approximately 113 square centimeters.
Answer:
113cm squared
Step-by-step explanation:
after finding the radius diameter divided by 2 use this formula
SA=(pi) r (r+l) solve from there
