Question

Square:cube::rectangle:cuboid::circle:x
What is x?

Answer 1

Square:cube::rectangle:cuboid::circle:x

Square = a^2
Cube= 6a^2

Rectangle = 2(w+h)
Cuboid = 4(l+b+h)

Circle=
$\pi \: r {}^{2}$
Sphere=
$4\pi \: r {}^{2}$

The answer is Sphere

Answer 2

Step-by-step explanation:

Pure calcium carbonate can be produced from marble, or it can be prepared by passing carbon dioxide into a solution of calcium hydroxide. In the later case calcium carbonate is derived from the mixture, forming a grade of product called "precipitated calcium carbonate,” or PCC.