Answer
correct is
A
Explanation
The surface area of a cone consists of the area of lateral side and the area of the base. The area of lateral side is determined using (π × r × s), s represents the slant height. The area of the base is determined using the formula of the area of a circle.
area of lateral side + area of base = surface area
(π × r × s) + (π × r²) = surface area
Input the numbers
(π × r × s) + (π × r²) = surface area
(π × 10 × s) + (π × 10²) = 150π
10πs + 100π = 150π
10πs = 150π - 100π
10πs = 50π
s = 50π/10π
s = 5
The slant height is 5 inches
Answer:
Step-by-step explanation:
We can write the equation of a line in 3 different forms including slope intercept, point-slope, and standard depending on the information we have. We have a point and a slope from the equation. We will chose point-slope since we have a point and can find the slope.
Point slope:
We must find the slope using the slope formula.
Slope:
We substitute and
in our new equation because it is perpendicular to it. This means we will need to change it into its negative reciprocal which is .
We will substitute and .
This is the equation of the line perpendicular to the equation line through the points given that crosses through (14,8).
Answer:
By the 3rd hour,jenny must have covered 90kms
Paul covered 30kms after Jenny's 3rd hour and jenny still covered 30kms making a total of 150kms in the opposite direction. Therefore Paul needs not to cover additional hour so the answer =0hour
Step-by-step explanation:
It is reflecting across the x-axis