Tafuta mzingo wa nusu duara ifuatayo
Suluhu
Mzingo
= ∏D + D
2
Mzingo
=( 1122 X
80560 )
+ 560
17 12
= (11 x 80
) + 560
= 880 + 560
= 1440
Hivyo mzingo
ni dm 1440
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