Question

If the biggest car of a circle is 10cm find its radius and diameter​

Answer 1

${\large{\underline{\sf{Correct\;Question:-}}}}$

If the biggest circumfrence of a circle is 10cm. Find its radius and diameter.

Given :

• The circumfrence of a circle is 10cm.

Find :

• The radius and diameter of the circle.

Solution :

Here, we the circumfrence of a circle that us 10 cm and we need to find its radius as well as its diameter.

We know that,

★ Formula for Circumfrence of circle is :

$\large{\boxed{\sf{Circumfrence= 2 \pi r }}}$

» Putting values in formula :

= ${\sf{Circumfrence= 2 \pi r }}$

= ${\sf{10 = 2 × \dfrac{22}{7} × r }}$

= ${\sf{10 = \dfrac{44}{7} × r }}$

= ${\sf{10 × \dfrac{7}{44} = r }}$

= ${\sf{ \dfrac{70}{44} = r }}$

= ${\sf{ 1. 59 \: cm= r }}$

The radius and diameter of the circle

➡ Radius of circle = 1.59 cm

➡ Diameter = 2 × radius = 1.59 × 2 = 3.18 cm

___________________________