diketahui sebuah kerucut mempunyai diameter 10 cm dan tinggi 12 cm.luas permukaan kerucut tersebut adalah..???

Please, let me answer your question :)
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Diketahui :
- d = 10 cm > r = 5 cm
- t = 12 cm

Ditanya :
- LP :...?

S²= r²+t²
S²= 5²+12²
S²= 25+144
S= √169
S= 13 cm

LP = πr (r+s)
LP = 3,14 x 5 (5+13)
LP = 15,7 (18)
LP = 282,6 cm²

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