(Help please!!) Which of the following expressions represents the lateral area of a right cone with r units as the radius of its base, l units as its slant height, and h units as its height?
pirh
2pirh
pir2
pirl

Question

(Help please!!) Which of the following expressions represents the lateral area of a right cone with r units as the radius of its base, l units as its slant height, and h units as its height? 
pirh 
2pirh 
pir2 
pirl <--- My answer 
Am I correct?

anonymous · Answer

Which is the best approximation of the total surface area of this right cone?

(Points : 1)
       60 cm2

       91 cm2

       113 cm2

       141 cm2
Not sure.. Please help..

anonymous · Answer

(Though this question was asked 2 months ago, I'm still going to post the answers for anyone who may look this up in the future.) 1. Which of the following expressions represents the lateral area of a right cone with r units as the radius of its base, l units as its slant height, and h units as its height? http://i.imgur.com/usp3FKC.png A. πrh B. 2πrh C. πr2 D. πrl The correct answer is D, so you are correct. 2. Which is the best approximation of the total surface area of this right cone? http://i.imgur.com/VJdQi57.png A. 60 cm^2 B. 91 cm^2 C. 113 cm^2 D. 141 cm^2 The correct answer is C.