Answer:
(147 - 298)/298 x 100
-151/298 × 100
Change ≈ -50.6711%
Step-by-step explanation:
Volume of square pyramid can be calculated by the formula :
V=
a is the length of base and h is the height of the pyramid.
In the given figure a= x in.and h =
in.
Volume of pyramid given V =486 cubic inches.
Substituting these values in volume of pyramid we have:
486=
÷ 3
Or 486=
486= 
Multiplying both sides by 12
5832 =

Or x= 18 in.
Multiply2 * x/15 to 2x/15
multiply both sides by 30 which is the LCM of 10, 5, 3, and 15
expand it
simplify 18 - 15x - 12x - 6 + 10x to 12 - 17x
add 17x to both sides
add 4x + 17x to = 21x
divide both sides by 21
simplify 12/21 to 4/7
now simplify
Answer: x = 4/7.
There all kinds so it would keep going on with nines