According to Vieta's Formulas, if

are solutions of a given quadratic equation:
Then:
is the completely factored form of

.
If choose

, then:

So, according to Vieta's formula, we can get:

But

:
Answer - 13.098 gm
Description -
Dear student,
As we know 
⇒ Mass = Density * Volume
so multiplying given Volume with the Density of gold ,we can calculate the mass of the gold . Density of gold at room temp. is 19.32 grams per cubic centimeter.
so mass of the sliver of gold = 19.32 * 0.678 = 13.098 (ans)
Sqrt y = y^1/2
antiderivative = 33 * y^(1/2 + 1) / (1/2 + 1) = 33 * y^(3/2) / 3/2
= 33 * 2/3 * y^(3/2)
= 22 y^(3/2) answer
Cubes are 3D so what 3 numbers multiply to 20
20×1×1
10×2×1
5×4×1
5×2×2
so 4 different shaped cubes