volume of a pyramid

[breezemjr]

Find the volume,to the nearest tenth, of a pyramid that is 6 feet tall and whose base is equilateral triangle with sides each 10 feet long.

V=1/3 Bh
V=1/3(100)(6)
V=1/3(600)
V=200

marked incorrect HELP please

 

[breezemjr]

Law of Detachment/Syllogism

Use the Law of Detachment or the Law of Syllogism to determine a conclusion that follows from statements:
(1) All squares are rectangles.
(2) If a quadrilateral is rectangle, then it has congruent diagonals.