Question

3. Given a circle with centre O and radius 2.5 cm. What is the length of the longest chord of the circle?

4. Find the diameter of a circle whose radius is 7.8 cm.

5. Draw a circle and measure its circumference by placing a thread along its circumference. (Hint: To measurethe circle.the circumference, measure the
length of the thread.)

class 6 please give me answer
this question is mathematics don't do in social sciences

Answer 1

Answer:

3) ans:We know that the diameter of a circle is its longest chord which is twice its radius.

So the length of the longest chord of the circle = 2 (2.5) = 5 cm.

4)ans:Given -

Diameter = 7.8 cm

To find -

Radius -

We know that ,

2Radius = Diameter

So,

2 Radius = 7.8 cm

Radius = 7.8/2 cm

Radius = 3.9 cm

5)yes it is a correct method for home use but for exams use Πd or 2Πr

Explanation:

Answer 2

radius= 7.8 cm

To find -

diameter -

We know that ,

Diameter = 2 radius

So,

2 Radius = 7.8 cm

Radius = 7.8/2 cm

Radius = 3.9 cm