Step-by-step Explanation:
The student has rectangular sheets of paper. The mass of paper is given per square meter (m²), and we need to find the mass of one sheet based on its size.
Given:
- Mass of 1.0 m² of paper = 0.080 kg
- Length of one sheet = 0.300 m
- Width of one sheet = 0.210 m
Step 1: Calculate the area of one sheet
Area = length × width = 0.300 m × 0.210 m = 0.063 m²
Step 2: Calculate the mass of one sheet
Mass of 1.0 m² is 0.080 kg, so mass of 0.063 m² = 0.080 kg × 0.063 = 0.00504 kg
Step 3: Final answer
The mass of one sheet of paper is approximately 0.0050 kg, or 5.0 grams.
This means each sheet is very light — just a few grams!