Solve Exercise 1 from Page 100 of Grade 5 Math Workbook

Guidelines for solving Exercise 1 on Page 100 of Grade 5 Math Workbook

Problem:
Calculate the area of a circle with radius r:
a) r = 6cm;                                                     b) r = 0.35dm.

Solving Approach:
- Apply the formula for calculating the area of a circle when the radius (r) is known: A = r x r x 3.14 or A = r² x 3.14 (The value of pi = 3.14)
- Substitute the corresponding values into the formula, calculate carefully to find the most accurate result.

Answer:
a) 6 x 6 x 3.14 = 113.04 (cm²)
b) 0.35 x 0.35 x 3.14 = 0.38465 (dm²)
    Answer: a) 113.04 (cm²);
                 b) 0.38465 (dm²)

The Grade 5 Math Workbook Page 100, Practice section comprises 3 exercises. After solving Exercise 1 on Page 100 of Grade 5 Math Workbook, please proceed to see the hints and methods for solving Exercise 2 on Page 100 of Grade 5 Math Workbook and Exercise 3 on Page 100 of Grade 5 Math Workbook to enhance your understanding of the subject.