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3,14×r×26 = 816,4
81,64r = 816,4
r = 816,4÷81,64
r = 10 cm
t = √26²-10²
t = √676-100
t = √576
t = 24 cm
Volume kerucut = 1/3πr²t
1/3×3,14×10²×24 = 3,14×100×8 = 2512 cm³
816,4cm²= 3,14·r·26cm
816,4cm²=3,14·26cmr
816,4cm²=26cmr
3,14
260cm²=26cmr
r = 260cm²
26cm
r = 10
jari jari = 10cm
garis pelukis = 26cm
jadi tinggi kerucut = √(26²-10²)
= √(676-100
=√576
=24cm
volume kerucut = 1/3·π·r²t
= 1/3·3,14·10cm·10cm·24cm
= 314cm²·8cm
= 2512cm³