The formula to calculate the lateral area of a cone is given by

where
LA=10.5pi in2
r=2.1 in
l=? slant height
substitute given values

<h2>The answer is 5 inches</h2>
The student would get an 80%.
Since 5 is 20% of 25, subtract 20 from 100 and you get 80%
−3.666667, hope that helps.
Answer:
they are corresponding angles