Question

find the length of the longest chord of a circle with radius 4 cm​

Answer 1

$\underline{\underline{\bold{ \large{ \: \: Given \: \: \: }}}}$

$\to$ Radius = 4 cm

$\underline{\underline{\bold{ \large{ \: \: To \: Find \: \: \: }}}}$

$\to$ Longest chord ( diameter ) = ?

$\underline{\underline{\bold{ \large{ \: \: Solution \: \: \: }}}}$

We know that ,

The largest chord of a circle is Its Diameter

$\to$ Diameter = 2 × Radius

$\to$ Diameter = 2 × 4

$\to$ Diameter = 8 cm

Therefore , 8 cm is the length of the longest chord of a circle with radius 4 cm

Answer 2

Answer:

Step-by-step explanation:

Longest chord of the circle is it's diameter

Therefore , if radius of circle is 4cm

Then, it's diameter (d) = 2r

=2×4

=8cm

Therefore, length of the longest chord of the circle will be twice of its radius i.e 8cm.

From this we can conclude that ,

Diameter = longest chord of the circle .