Matematika

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Apa jawaban...?
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Apa jawaban...? No.6 No.7 No.8 No.9 No.11

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  • 6). kll O = πd L O = 22/7.21.21 = 1386cm2
    132 =22/7d
    d =7/22.132
    d = 42

    7). 64π = π.r^2 = √64 = 8cm

    8). luas persegi 14x14 = 196cm2
    luas 1/4O = 1/4.22/7.14.14 = 154cm2
    luas yg diarsir = 196-154=42cm2

    9). luas taman = 25x25 = 625m2
    luas kolam = 22/7.7.7 = 154m2
    luas taman yg ditanami rumput = 625-154=471m2
    biaya = 471x10.000 = 4.710.000



    good luck.. ;-) follow.. jadikan jawaban yang terbaik :-)

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