Question

1. An object has a diameter of 1.80 m, a thickness of 65.0 cm, and a mass of 3.70 g. What is its density in

kg/m³?

Answer 1

Step-by-step explanation:

Given:

D = 1.80 m

h = 65.0 cm =0.65 m

m = 3.70 g = 0.0037 kg

___________________

ρ - ?

S = π·D² / 4 = 3.14·1.8² / 4 ≈ 2.54 m²

V = S·h = 2.54·0.65 ≈ 1.65 м³

ρ = m / V = 0.0037 /1.65 ≈ 0,0022 kg / m³