[helpmee1234567890]

the radius of a circle inscribed within a right triangle ABC is 2cm and the radius of a circle circumscribed about the triangle ABC is 5 cm. Find the lengths of the sides of the triangle.

a diagram wasnt given otherwise i would have posted it but im thinking its a circle within the triaangle then another outside and the hypotenuse of the triangle is 10 since the outer circle is radius 5cm

?

anyway thanks in advance

[TenOfThem]

do you have a whole set of these to answer?

[TenOfThem]

Given that it is a right angled triangle

Consider the circumscribed circle

You know the length of the hypotenuse


durrr me ... you already realised this

[helpmee1234567890]

(Original post by TenOfThem)
do you have a whole set of these to answer?

lol yeah its revisions i basically got problem sheet 1-21 to do for my may exams

[helpmee1234567890]

btw the answer is 6, 8 and 10

[helpmee1234567890]

Ok im stil stuck i dnt get it at all

[TenOfThem]

Sorry I made an error earlier and then gave up ... I will take another look

[TenOfThem]

this works

[steve2005]

(Original post by helpmee1234567890)
the radius of a circle inscribed within a right triangle ABC is 2cm and the radius of a circle circumscribed about the triangle ABC is 5 cm. Find the lengths of the sides of the triangle.

a diagram wasnt given otherwise i would have posted it but im thinking its a circle within the triaangle then another outside and the hypotenuse of the triangle is 10 since the outer circle is radius 5cm

?

anyway thanks in advance

I have tried to produce a diagram BUT I can't seem to get a better fit. So something is wrong.




Uploaded with ImageShack.us

[TenOfThem]

The inscribed circle does not touch the diameter there ... it splits it into 4 and 6

[helpmee1234567890]

(Original post by TenOfThem)


this works

i tried it ,
it dont work i got some wierd answer

[TenOfThem]

gave me exactly the answers you expected

[helpmee1234567890]

(Original post by TenOfThem)


this works

OHHH I GOT IT THANK YOUUu!