(_4)×(_5)×(_6)×........×(_13) in intigers
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all no.is positive.
beacuse if a number is greater than zero then it is positive.
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Answer:
Step-by-step explanation:
=2(l+b)h+lb
=2(20+15)h+20*15
=8(35)+300
=580
The cost of cementing =580*12
=6,960
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