Penjelasan dengan langkah-langkah:
L permukaan kerucut = L alas + L selimut
= (phi x r^2) + (phi x r x s)
= phi x r x (r + s)
= 3,14 x 10 x (10 + 15)
= 31,4 x 15
= 471 cm^2
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Verified answer
Penjelasan dengan langkah-langkah:
L permukaan kerucut = L alas + L selimut
= (phi x r^2) + (phi x r x s)
= phi x r x (r + s)
= 3,14 x 10 x (10 + 15)
= 31,4 x 15
= 471 cm^2