Answer:
1. h = 3 inches
2. a) 27 cubes b) 1/27 cubic inches
Explanation:
1:
Area of a triangle is A = (1/2)bh (base x height)
5 1/10 = (1/2)(3 2/5)h
Now just solve for h.
Divide both sides by 1/2 to get rid of the 1/2
10 1/5 = (3 2/5)h
Divide both sides by 3 2/5
h = 3
2:
a) 3 cubes are needed to get one edge length of 1 inch.
3 x 3 x 3 = 27 cubes
b) Volume of a cube is just V = s^3
V = (1/3)^3 = 1/27 cubic inches