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d = 28 cm
r = 14 cm
t = 48 cm
Luas tumpeng yang akan dihias = phi x r x s
S = √14² + 48²
=√196 + 2304 (menggunakan konsep phytagoras)
= 50
Luas tumpeng yang akan dihias = phi x r x s
= 22 x 14 x 50
7
= 2200 cm²