max236524
max236524 max236524
  • 24-07-2017
  • Mathematics
contestada

Find the surface area.

Find the surface area class=

Respuesta :

Аноним Аноним
  • 24-07-2017
Surface area = lateral area + base area

Base area = r²π

Lateral area = πra (a is apotheme, 0,51 m)

0,51 m = cm 51 (0,51×100)

Find the radius. As you can see, the apotheme is the hypothenuse of the right triangle inside the cone. The heught of the cone is one leg. Apply Pitagora.

r = √51²-24² = √2601-576 = √2025 = 45 cm

Base area = 45²*pi = 2025pi cm²

Lateral area = 45*51*pi = 2295pi cm²

Surface area = 0,2025+0,2295 = 4320pi cm²
Answer Link

Otras preguntas

what is the x-intercept h=-16t^2+20t+6?​
Rebekah has a table that has a mass of 18.6 kg. What is the weight of the table? A. 28.4 N B. 9.8 N C. 182.28 N D. 7 N
How did google CEO PichaiRespond to congress member queries about this
A jogger ran 3 miles due east of his house. Then he ran 5 miles at a heading of 30 degrees east of North (or 30 degrees NE). How far is he from his house after
Find the perimeter of a rectangle that is 7 cm long and 7 cm wide
HELP PLEASE SOMEONE HELP MEEE ASAPPPP
Difference between a trill and a tremolo in music. If you reply without musical knowledge I will report! :)
Since at first his paintings were met with indifference in America, Audubon had to go to _______________ to find a publisher. England Florida France Ireland
solve h=-16t^2+20t+6?​
What were the most important developments that contributed to the start of World War I in Europe? Describe at least two factors.