Answer:
Step-by-step explanation:
(a) radius is the bottom leg of the right triangle formed by the slopped edge and the vertical line from the tip to the center of the base. So that's easy enough with the pythagorean theorem.
15^2 + b^2 = 34^2
b = sqrt(1156 - 225)
b = 30.512
(b) The surface area can be looked at as the surface area of the circular base + the surface area of the actual cone.
area of a circle is pi*r^2 and the surface area of the cone, excluding the base, is pi*r*s, where s is the slant height. If you want to know where that one comes from it kinda takes some calculus to understand but I can link a video to explain it.
pi*r^2 + pi*r*s
pi(r^2+rs) I factored out pi to make things a little easier.
pi(931+30.512*34)
1968.408pi Feel free to multiply out pi.
(c) Volume for a cone (or any kind of pyramid) is area of the base times the height all divided by 3.
so since we know the area of the base we can just plug in.
(pi*r^2*h)/3
(pi*931*15)/3
4655pi
Answer:
percent change = 27.5 % decrease
Step-by-step explanation:
percent change = (original - new)/original
percent change = (160-116)/160
percent change = 44/160
percent change =.275
change from a decimal
percent change = 27.5 % decrease
her total money = 1500 + 250
= $1750
expenditure= 122 + 287 + 61
= $470
left over money = 1750 - 470
= $1280
Answer:
your try this is not the named above the new one in my case I can you tell the truth be the first and foremost is not in any form is
Step-by-step explanation:
ydu is not working in the past two days in my head of my head to be in town on your phone is to
Answer:
d is 18, a is 11, c is 9 and b is 12
Step-by-step explanation:
i think its this, although im only really sure for d.
im 50 percent sure with the others as they add to 50
