Total volume is volumes of both square pyramids.
Volume of a tetrahedron is 1/3 times corresponding prism, and a square pyramid has two tetrahedrons.
Thus, volume of on square pyramid:
Since there are two of them, total volume is:
$\boxed{\frac{2a^2b}{3}}$
With out any functions to choose from...this is difficult. But look for the equation that has a a decimal raised to a power (.07)^2
Answer:
-12/(-4(5-3)-2(-23+21)-12/(-4(2)-2(-2))
-12/(-8+4)
-12/-4
3
R//: 3
advice: to solve operations like these (polynomials) always start with the expressions in parentheses