Matematika

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tolong dong dijawab pliss
tolong dong dijawab pliss

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1 Jawaban

  • 4. a.K= 1/2 x 2πR + 1/2 x 2πr + 1/2 x 2πr
    = 10π + 5π + 5π
    = 20π
    b. L = 1/2 πR2 - 1/2 πr2 + 1/2 πr2
    = 1/2 π (10)2
    = 50π

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