Surface area of cone is a sum of surface of its base and surface of its mantle.
Surface of its base is a circle which surface we will calculate like this:
Sb = pi*r^2 where r is d/2
Sb = 201m^2
Surface of mantle we calculate by:
Sm = pi*l*r where l is length of side of cone.
l =

= 25.3
Sm = 635.8m^2
Total suface is:
Sb + Sm = 836.8m^2
Answer:
35+28=63
Step-by-step explanation:
hope this helps
Answer:
I need to know the radius or diameter.
Step-by-step explanation:
I believe it’s 2 because rise/run and 14/7 = 2