Jawabanmu

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2014-01-08T18:06:16+07:00
R = d÷2 = 35÷2 = 17.5
L =πr²
=3.14x(17.5)²
=961.625 m²
Kel = 2πr
=2x3.14x17.5
=109.9 m
1 5 1
2014-01-08T18:10:25+07:00
Kelilingnya : 2.pi.r = 2x22/7x17,5 = 110cm

Luasnya : pi.r kuadrat = 3,14x17.5x17,5 = 961,625cm