suatu lingkaran memepunyai jari jari 31,5 cm luas lingkaran tersebut adalah...cm²
a.2.118,5
b.2.818,5
c.3.118,5
d.3.811,5
a.2.118,5
b.2.818,5
c.3.118,5
d.3.811,5
L =π x [tex]r^{2}[/tex]
= [tex]\frac{22}{7}[/tex]x [tex]31.5^{2}[/tex]
= [tex]\frac{22}{7}[/tex] x 992.25
=3118.5 (c)
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