Let ones digit = z
Let tens digit = y
Let hundreds digit = x
Then three digit number xyz will be equivalent to (100x+10y+z)
If we reverse the digits then new number zyx will be equivalent to (100z+10y+x)
2(100x+10y+z)=(100z+10y+x)+1
200x+20y+2z=100z+10y+x+1
199x+10y-98z-1=0
There are no more conditions given so that we can use them to minimize calculation in order to find the answer.
So now we have only choice to plug random numbers for x,y,z which can vary from 0 to 9.
Working as explained above gives x=3, y=9, z=7 is satisfying the above equation.
Hence required number is 397.
Answer:
idk a or c
Step-by-step explanation:
The volume of a pyramid is the one-third of the product of the area of the base and the height of the pyramid.
V = (1/3)Ah
where
A = area of base
h = height of the pyramid
The base of this pyramid is a hexagon.
The area of a regular hexagon is
A = (1/2)pa,
where
p = perimeter of the base
a = apothem
The perimeter of the hexagon is 6 * 6 ft = 36 ft.
The apothem is shown in the figure and is 5.2 ft.
Area of base: (1/2)pa = (1/2)(36 ft)(5.2 ft) = 93.6 ft^2
Volume = (1/3)Ah = (1/3)(93.6 ft^2)(8 ft)
Volume = 249.6 ft^3
Answer: 250 ft^3