Solving Exercise 2 Page 98 Math 5 Textbook

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Solving Exercise 2 Page 98 Math 5 Textbook: Circumference of a Circle, Calculate Circumference of a Circle with Radius r:

Guidance on Solving Exercise 2 Page 98 Math 5 Textbook

Problem:

Calculate the circumference of a circle with radius r:
a) r = 2.75cm;
b) r = 6.5dm;
c) r = 1/2m

Solving Method:

Answer:
a) The circumference of a circle with radius r = 2.75cm is:
2.75 x 2 x 3.14 = 17.27 (cm)
b) The circumference of a circle with radius r = 6.5dm is:
6.5 x 2 x 3.14 = 40.82 (dm)
c) The circumference of a circle with radius r = 12m is:
1/2 x 2 x 3.14 = 1x2x3.142 = 3.14 (m)
Answer: a) 17.27cm;
b) 40.82dm;
c) 3.14m

The Solving Grade 5 Math Exercise Page 98 section consists of Z exercises, after solving Exercise 2 Page 98 Math 5 Textbook, please proceed to see hints and methods for solving Exercise 1 Page 98 Math 5 Textbook and Exercise 3 Page 98 Math 5 Textbook, to enhance your understanding of Grade 5 math.

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Frequently Asked Questions

How do I calculate the circumference of a circle with a specific radius?

To calculate the circumference of a circle, use the formula C = 2 × π × r, where C is the circumference and r is the radius. For example, if the radius is 2.75 cm, the calculation is 2.75 × 2 × 3.14, resulting in a circumference of approximately 17.27 cm.

What is the formula for finding the circumference of a circle?

The formula for finding the circumference of a circle is C = 2 × π × r, where C represents the circumference, π (pi) is approximately 3.14, and r is the radius of the circle. This formula applies to all circles regardless of their size.

Can you provide an example of calculating circumference for different radius values?

Certainly! For a radius of 6.5 dm, the circumference is calculated as 6.5 × 2 × 3.14, which equals approximately 40.82 dm. For a radius of 0.5 m, the circumference calculation is 0.5 × 2 × 3.14, resulting in approximately 3.14 m.

What steps should I follow to solve Exercise 2 on page 98 of the Math 5 textbook?

To solve Exercise 2 on page 98, first identify the radius values given in the problem. Then, apply the circumference formula C = 2 × π × r for each radius. Finally, calculate and record the circumference for each value to complete the exercise.