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Perplex
  • Dashboard
Topics
Exponents & LogarithmsRounding & ErrorSequences & SeriesCounting & BinomialsProof and ReasoningComplex NumbersAlgebra Skills
Cartesian plane & linesQuadraticsFunction TheoryTransformations & asymptotesPolynomials
2D & 3D GeometryTrig equations & identitiesVectors
ProbabilityDescriptive StatisticsBivariate StatisticsDistributions & Random Variables
DifferentiationIntegrationDifferential EquationsMaclaurin
Paper 3
Plus
Calculator Skills
Review VideosFormula BookletAll Study Sets
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IB Math AAHL
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Trig equations & identities
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Problem Bank
IB Math AAHL
/
Trig equations & identities
/
Problem Bank

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[Maximum mark: 4]

A spherical white blood cell appears as a circle with circumference ​6π×10−5m.

  1. Write down the radius of the cell.

    [1]
    Part (a):
    r=m
  2. Find the volume of the cell, giving your answer in the form ​π(a×10k)m3, where ​a<10​ and ​k∈Z.

    [3]
[Maximum mark: 4]

A spherical white blood cell appears as a circle with circumference ​6π×10−5m.

  1. Write down the radius of the cell.

    [1]
    Part (a):
    r=m
  2. Find the volume of the cell, giving your answer in the form ​π(a×10k)m3, where ​a<10​ and ​k∈Z.

    [3]