So, r' (the new r) becomes kr, and h'=h*k,
so V' = pi * (r')^2*h' = pi * (r*k)^2*(h*k) = pi*r^2*h*k^3 = V * k^3
Convinced?
Answer:
225
Step-by-step explanation:
If you move the bottom triangle up (as shown in the picture) it's not actually a square. And they haven't provided you with enough information to solve for anything unless there are still unknown values. You would need to know at least another leg length or angle. If they want the actual value in square millimeters, my best guess is that it's <em>supposed </em>to be a square. Since a square has sides of the same length, the area would be 15 * 15 which is 225.
Ab=10
a^2+b^2=30
((a+b)^2=a^2+2ab+b^2=a^2+b^2+2*10=30+20=50
<span>Sixty percent of the days in the desert were hot and dry. Out of the 365 days, how many were hot and dry?
Solution is simple.
There are 365 days and 60% of those are hot and dry. What is 60% of 365?
365 x .60 = 219
</span>
Answer:
$500
Step-by-step explanation:
He started off with $282
then bought concert tickets for $85 : 282-85=197
He has a new balance of $197
He then pays $25 for snacks : 197-25=72
He has a new balance of $72
After, he deposits $328 : 72+328=500
He has a new account balance of $500
