two circle of radius 12.2 cm and 10.8 touch each other internally. find the distance between their centres
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Answer: 2.8cm
Step-by-step explanation:
Given, r
1
=4.8cm
r
1
−r
2
=2cm
r
2
=4.8−2=2.8cm
Draw a circle with centre O and radius 4.8cm
Locate a point O
′
at a distance of 2cm from O and draw a circle of radius of 2.8cm
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