Answer:
Hi, to find the surface area of a cone is πrl
if your radius and length is given.
hope this helps (•‿•)
Answer:
The correct answer is Never
69.) 4(x + 5) = 4(x) + 4(5) = 4x + 20
70.) 4(2b - 5) = 4(2b) - 4(5) = 8b - 20
71.) Area = length x width = 11(3x + 2) = 33x + 22
5(5 + 2y) = 25 + 10y
Answer:
14.7
Step-by-step explanation:
a^2+b^2=c^2
15^2+b^2=21^2
225+b^2=441
subtract 441-225=216
square root of 216 = 14.6969384567
= 14.7
