Question

Panjang jari-jari alas kerucut = 7cm tingginya 24cm Hitung luasnya jika phi= 22/7...

Answer 1

R = 7 cm
t = 24 cm
s^2 = r^2 + t^2
s^2 = 7^2+ 24^2
s^2 = 49 + 576
s = akar 625
s = 25 cm
L = phi x r^2 + phi x r x s
   = 22/7 x 7^2 + 22/7 x 7 x 25
   = 154 +550
   = 704 cm^2
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