To find the surface area of a cone, use this formula.
pi (r) (r + [square root of h^2 plus r^2] ) substitute
h = height = 22 r = radius = 28/2 = 14 [ ] = sq. root
pi (14) (14 + [ 22^2 + 14^2 ]) solve exponents
pi (14) (14 + [484 + 196]) add
pi (14) (14 + [680]) solve square root
pi (14) (14 + 2[170]) add
pi (14) (40.0768) multiply
pi (561.075) is about 561.1 rounded to nearest tenth
So the answer is C. 561.1pi cm^2
Answer:
3*n<4=11
Step-by-step explanation:
Three times a number n less than 4 is 11
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➷ There is only one '3' on the cube
Therefore, it would be B. 1/6
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Answer:
<em>105.</em>
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Step-by-step explanation:
7rows × 20seats = <em>140seats total</em>
7rows × 5seats = <em>35seats reserved</em>
140total - 35reserved = 105open
