September 2018 1 17 Report
Juring sebuah lingkaran berjari jari 4 cm dan sudut pusatnya 270° akan dibuat model selimut kerucut.
a. berapa jari-jari lingkaran alas kerucut itu???
b. berapa luas permukaan kerucut itu jika dilengkapi alasnya???
Tolong dijawab ya??
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