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The radius of a sphere is 1.41 cm . its ...

The radius of a sphere is `1.41` cm . its volume to an appropriate number of significant figure is

A

`11.73 cm^(3)`

B

`11.736 cm^(3)`

C

`11.7 cm^(3)`

D

`117 cm^(3)`

Text Solution

Verified by Experts

The correct Answer is:
C
Radius of the sphere ,`r = 1.41 cm (3 "significant")` Volume of the sphere `V = (4)/(3) pi r^(3) = (4)/(3) xx 3.14 xx(1.41)^(3)`
`= 11.736cm^(3)`
Rounded off up to`3` significant) figure `= 11.7cm^(3)`
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Knowledge Check

  • The diameter of a sphere is 14 cm. Its volume is

    A
    `1428 cm^(3)`
    B
    `1430 cm^(3)`
    C
    `1437 ""(1)/(3) cm^(3)`
    D
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  • If the radius of a sphere is 2r , them its volume will be

    A
    `(4)/(3)pir^(3)`
    B
    `4pir^(3)`
    C
    `(8pir^(3))/(3)`
    D
    `(32)/(3) pir^(3)`

  • If the radius of a sphere is doubled, its volume becomes

    A
    a.double
    B
    b. four times
    C
    c.six times
    D
    d.eight times

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