r = 10 cm
s = 15 cm
Luas permukaan kerucut
= π x r x (r + s)
= 3,14 x 10 x (10 + 15)
= 31,4 x 25
= 785 cm²
Jawaban C
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r = 10 cm
s = 15 cm
Luas permukaan kerucut
= π x r x (r + s)
= 3,14 x 10 x (10 + 15)
= 31,4 x 25
= 785 cm²
Jawaban C