Answer:
It has 5 significant figures.
Step-by-step explanation:
In a direct proportion, the equation can be set up as
y = kx
k = y/x
k = 6/20
k = 0.3
V = L³ = 64 => L = ∛64 = 4 cm
A = L² = 4² = 16 cm²
At = 16 x 6 = 96 cm²
Consider one pyramid
Side length of base = 1.5cm and its height is 1 cm
Slant height of one of the lateral faces = sqrt(1^2 + 0.75^2) = 1.25 cm
Area of one of the triangular faces = 0.5 * 1.5* 1.25 = 0.9375 cm^2
There are 8 of these so the required surface area = 8 * 0.9375
= 7.5 cm^2 Answer
