In quadrilateral ABCD, AC = 10 cm. BM and DN are altitudes on AC from B and D respectively if BM=12cm and DN=4cm then ar(ABCD)= ____________cm²
A. 160
B. 80
C. 320
D. 480
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In quadrilateral ABCD, AC = 10 cm. BM and DN are altitudes on AC from B and D respectively if BM=12cm and DN=4cm then ar(ABCD)= ____________cm²
A. 160
B. 80
C. 320
D. 480
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refer to attachment↑↑↑
[tex]ar(abcd) = 80 {cm}^{2} [/tex]