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Standard X

Mathematics

Radius

The radius of...

Question

The radius of the circle is 6cm. The circle touches another circle externally and the distance between their centres is 10cm. What is the radius of the second circle?

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Solution

Let r and s be the radii of two circles.

r = 6cm

s = ?

r + s = 10cm

s = 10 – r

= 10 – 6 = 4cm.

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The radius of the circle is 6cm. The circle touches another circle externally and the distance between their centres is 10cm. What is the radius of the second circle?

Let r and s be the radii of two circles. r = 6cm s = ? r + s = 10cm s = 10 – r = 10 – 6 = 4cm.

Let r and s be the radii of two circles.

r = 6cm

s = ?

r + s = 10cm

s = 10 – r

= 10 – 6 = 4cm.