1.

Two circles of radius 9 cm and 8 cm touch externally. Find the distance between their centres?1). 17 cm2). 2 cm3). 9 cm4). 15 cm

Answer»

SOLUTION

Given :

Radius of 1st circle, R1 = 9 cm 

Radius of 2nd circle, R2 =8cm

According to the LAW of betweeness 

Distance between the CENTRES of the two circle = Sum of the radii of the two circles.

So,Distance between the centres of the two circle = R1 + R2 

= 9 + 8 = 17 cm 

Distance between the centres of the two circle = 17cm

So, the CORRECT option is 1).17cm



Discussion

No Comment Found

Related InterviewSolutions