What is the surface area of a conical grain storage tank that has a height of 43 meters and a diameter of 14 meters? Round the answer to the nearest square meter. A. 1,100 square meters B. 1,112 square meters C. 2,507 square meters D. 2,605 square meters

• calculista: we know that
  [surface area of the cone]=pi*r²+pi*r*l
  where 
  r is the radius
  l is the slant height
  l²=h²+r²
  h=43 m
  r=14/2---> 7 m
  l²=43²+7²----> l²=1898--------> l=43.57 m
  [surface area of the cone]=pi*7²+pi*7*43.57----> 1111.53 m²----> 1112 m²
  
  the answer is the option 
   B. 1,112 square meters