Answer:
Step-by-step explanation:
In order to find the value of y, first we need to find the length of the perpendicular dropped from one of the vertices of the triangle to its opposite side.
By geometric mean theorem:
Length of the perpendicular
Next, by Pythagoras theorem:

Formula = 4/3 x pi x r^3
4/3 x 3.14 x 7^3 = 1436.03
answer: a. 1436.03 cubic units
3
1
390
x 42
-------
1282
1564
----------------
the answer would be 16380
Hope this helped :)
Answer:
1, 2, 3, 4, 6, 9, 12, 18, 36
Step-by-step explanation: