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= 7 pangkat 2 + 24 pangkat 2
= 49 + 576
= 625= akar dari 625= 25
L.permukaan kerucut= (phi x r x s) + (phi x r2)
= (22/7 x 7 x 25) + (22/7 x 7 pangkat 2)
= 550 + 154
= 704 cm2
maaf kalo jawabannya salah