Dik. Volume kerucut 785 cm³ tinggi kerucut 10 cm.
Hit. Panjang jari-jari kerucut?
Hit. Panjang jari-jari kerucut?
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ditanya : r....?
jawab :
Volum=1/3.πr²t
785=1/3.πr².10
785.3=πr².10
2355/10=3,14.r²
235,5/3,14=r²
75=r²
√75=r
jadi panjang jari jari kerucut diatas adalah √75 cm
maaf klo salah