The surface area of a sphere can be approximated as follows: Surface area = 4πr2; where r is the radius of the sphere; π is a constant that is roughly equal to 3.
Answer:Metals are lustrous, malleable, ductile, good conductors of heat and electricity. Other properties include: ... Hardness: All metals are hard except sodium and potassium, which are soft and can be cut with a knife. Valency: Metals typically have 1 to 3 electrons in the outermost shell of their atoms.
Explanation:
The answer is B, fossil fules