Answers

2014-01-26T17:12:46+05:30
4/3/ \pi  r^{3} =4/3 \pi R^{3}
 r^{3} =27 R^{3}
r=3R
surface area of 1circle/surface area of 2 circle=
 r^{2} = R^{2}
9R*R=R*R
9:1

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2014-01-27T12:55:01+05:30
RADIUS OF 1SPHERE=r
"              "    2SPHERE=R
SO FOR 27 SPHERE=27R
SO r3=27R3
S0 r=3R
NOW SURFACE AREA
4/3 PI r2=4/3 PI R2
9R2=R2
SO THE RATIO IS 9:1
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