Test

Self evaluation G8

Zeinab Zeineddine 5 preguntas

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Preguntas del test (5)

1Give a circle C(O;4cm) and a point A such that OA=2 cm, then
1. AA on (C)
2. BA inside (C)
3. CA outside (C)
2The diameter is the shortest chord in a circle
1. AVerdadero
2. BFalso
3The 2 circles A(M; 5) and B(N;3) where MN= 2 are disjoint internally
1. AVerdadero
2. BFalso
4Given the two circles C(O; r) and C(O'; r') where OO'=12
If the circles are tangent externally and r is double of r' than
1. Ar=10 and r'=2
2. Br'=8 and r=4
3. Cr'=4 and r=8
5Given the two circles (C ) and (C’) are internally tangent, and OO’= 9 cm.
Calculate R’, if R is twice the radius of (C’) decreased by 3 cm.
1. AR'=3 and R=12
2. BR=7 and R'=2
3. CFind the correct answer