30) A sphere with radius 6.cm is completely submerged in a cylinder filled partly with water. Due to that, the water level in the cylinder increased by 4.5 cm. Find the radius of the cylinder
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Given radius of sphere = 6 cm
Circumference of sphere = 2πr
= 2 × 22/7 × 6 cm
= 37.71 cm
Circumference of cylinder = 4.5
Circumference of cylinder = 2πr
4.5 cm = 2 × 22/7 × r
4.5 × 7/2×22 cm = r
323.4 cm = r
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