Answer:

Step-by-step explanation:
Given that,
The diameter of the base of a circular cone, d = 18 inches
Height of the cone, h = 40 inches
We need to find the lateral surface area of the cone. The formula of the lateral surface of the cone is given by :

l is the slant height of the cone,
, d = 18 inches, r = 9 inches
So,

So, the lateral surface area of the cone is
.
Answer:
Step-by-step explanation:
here x1=0 y1=-2 x2=-6 y2=4
slope=y2-y1/x2-x1
=4-(-2)/-6-0
=4+2/-6
=6/-6
=-1
therefore slope=-1.
Answer:
112degrees
Step-by-step explanation:
Alternate angles form a 'Z' shape and are sometimes called 'Z angles'. a and b are adjacent angles. Adjacent angles add up to 180 degrees. ... These add up to 180 degrees (e and c are also interior).
Answer:
2/13 of an hour
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given
as

so


Therefore,
