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Find the radius, diameter and circumference of a circle with an area of 64 pi cm2 Write your answers as decima

Find the radius, diameter and circumference of a circle with an area of 64 pi cm2. Write your answers as decimals rounded to the nearest hundredth.

pi r^2=64 pi
r^2=64
r=8cm
d=2r
d=2(8)
d=16cm
circum.=2 pi r
=2(8) 22/7
16*22/7
=50.24 cm

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4 Responses to “Find the radius, diameter and circumference of a circle with an area of 64 pi cm2 Write your answers as decima”

  1. Do your own homework. It will help you in the long run.
    References :

  2. This one is easy. It would take me more time to type out this question than to do it myself.
    r=8.00cm
    d=16.00cm
    C=16pi ~ 50.26cm

    And please don’t say I rounded wrong for the C. You round toward the nearest even digit.
    50.265 rounds to 50.26, while
    50.275 rounds to 50.28.
    References :

  3. pi r^2=64 pi
    r^2=64
    r=8cm
    d=2r
    d=2(8)
    d=16cm
    circum.=2 pi r
    =2(8) 22/7
    16*22/7
    =50.24 cm
    References :

  4. A=(pi)r^2
    64(pi) = (pi)r^2
    r^2=64(pi)/(pi)
    r^2=64
    r=+ or -8
    r= -8 not a practical solution,
    r=8

    d=2r, =2(8), = 16

    C=(pi)d
    C=3.14(16)
    C=50.24

    r=8cm.,
    d=16cm.,
    C=50.24cm.
    References :

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