Cube: V = s³, SA = 6s²

↳side 5 → V=125, SA=150

Cuboid: V = lwh, SA = 2(lw+wh+lh)

↳5×4×3 → V=60

Sphere: V = (4/3)πr³, SA = 4πr²

↳r=3 → V=36π, SA=36π

Cylinder: V = πr²h, SA = 2πr(r+h)

↳r=3, h=10 → V=90π

Cone: V = (1/3)πr²h

↳r=3, h=10 → V=30π (1/3 of cyl)

Euler: F + V = E + 2

↳cube: F=6, V=8, E=12 → 6+8 = 12+2 ✓