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Class 10 > Learn Mathematics > If the radius of a sphere is 2 r, then what is its...
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If the radius of a sphere is 2 r, then what is its volume?

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Volume of the sphere =( 4/3 π r3 ) cubic unit, If r = 2r then, Volume of the sphere: = = = 32/3 π r3.
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If radius is 2r, volume is32/3 pi rcube
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None because sum of angles of a triangle is 180 degrees
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radius of the sphere=2r The volume of a sphere = 4/3×?×r^3 =4/3×?×(2r)^3 =4/3×8r^3 =32/3×?r^3
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Area of triangle=1/2× b× h =1/2× 4×4 = 8sq cm.
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mean =Sum of observations/ Number of observations So, if mean of 100 observations is 50 , then sum of hundred observations = No of observations× Mean = 100×50 =5000 Now ,An observation 50 was replaced by 150 . So new sum of observations =5000-50+150 = 5000+100 = 5100 New mean =5100/100 ...
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mean =Sum of observations/ Number of observations So, if mean of 100 observations is 50 , then sum of hundred observations = No of observations× Mean = 100×50 =5000 Now ,An observation 50 was replaced by 150 . So new sum of observations =5000-50+150 = 5000+100 = 5100 New mean =5100/100 = 51. read less
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Area of rectangle= l×b = 16 × 8 = 128sq cm
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V=32/3*πr^3
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put x3 = a and y3 = b so that 14a2 - 45ab - 14b2 14a2 - 49ab + 4ab - 14b2 (2a - 7b) (7a + 2b) (2x3 - 7y3) (7x3 + 2y3)
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Volume of the sphere =( 4/3 π r3 ) cubic unit, If r = 2r then, Volume of the sphere: = = = 32/3 π r3.
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