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07-03-2019
Mathematics

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please solve all and work needs to be shown ❤️❤️

please solve all and work needs to be shown class=

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07-03-2019

1).

a=bh

=(13)(9)

=117in^2

2).

A=1/2h(b1+b2)

=1/2(14)(15+9)

=168cm^2

3).

A=1/2d1d2

=1/2(18)(11)

=99in^2

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