Answer:
The correct answer is option 1. 
cubic units.
Step-by-step explanation:
The formula for the volume, V of a right angled cone is given as:
Where, 
is the radius of the circular base of the cone.
is the height of the cone.
We are given that height is twice of the radius of its base.
Let the radius of base = 
units
Now, As per the question statement,
The height of cone= 
units
Putting the values of 
in equation (1) to find the volume:
Hence, the correct answer is option 1. 
cubic units.
You use lots and lots of math.
I believe it is ; for the number
Answer:
x + 3y = 5
5x - 3y = 7
Add up both equations, then:
6x = 12
=> x = 2
=> y = (5 - 2)/3 = 1
That means the thousands number will either be the same or 1 higher based on the hundreds place & everything after the thousands place will be 0s
247,000
