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Find the centres and radii

Two circles of radii 9cm and 13cm have their centres 15cm apart. Find the angle between the radii joining the centres to the
1. 2 answers
2. asked by nicole
3. 900 views
Find the centres and radii of the circles given byA)x2+y2=6x B)x2+y2-6x+14y+49=0
1. 1 answer
2. asked by princess
3. 496 views
Three circles touch one another externally.Their centres form A triangle with sides 10cm,9cm and 7cm.Find the radii of the
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2. asked by Gbotty
3. 878 views
The figure shows a continuous belt passing round two pulleys. The radii of the pulleys are 20 cm and 5 cm, and their centres are
1. 1 answer
2. 163 views
A conductor in a shape of a spherical shell of radii 10 and 12cm in charged to 20 micro coloumb.1) Find the electric field at
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2. asked by vishal
3. 608 views
Two insulated charged metallic spheres A & B have their centres separated by a distance of 50cm in air. Calculate the force of
1. 1 answer
2. asked by Abdullahi
3. 935 views
Three circles touch each other externally. Their centres make a triangle with sides of 11cm, 15cm and 19cm. What are the radii
1. 1 answer
2. asked by Christopher
3. 757 views
Two solid spherical balls with centres P and Q touch each other. The balls lie inside and in contact with a hemispherical bowl
1. 3 answers
2. asked by Kate
3. 1,496 views
. In the diagram, the five circles have the same radii and touch each other as shown. The square joins the centres of the four
1. 1 answer
2. asked by Freezer
3. 207 views
. In the diagram, the five circles have the same radii and touch each other as shown. The square joins the centres of the four
1. 0 answers
2. asked by Freezer
3. 236 views