Do number 6 please!!!
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Using Pythagorean theorem
Base of one triangle be B
[tex]\\ \sf\longmapsto B^2=15^2-7^2[/tex]
[tex]\\ \sf\longmapsto B^2=225-49[/tex]
[tex]\\ \sf\longmapsto B^2=176[/tex]
[tex]\\ \sf\longmapsto B\approx 13[/tex]
Now
[tex]\\ \sf\longmapsto Area=\dfrac{1}{2}bh[/tex]
[tex]\\ \sf\longmapsto Area=\dfrac{1}{2}(7)(26)[/tex]
[tex]\\ \sf\longmapsto Area=13(7)[/tex]
[tex]\\ \sf\longmapsto Area=91m^2[/tex]
Total cans
[tex]\\ \sf\longmapsto 91/20=4.5cans[/tex]