Answer:
Total surface area of the three tanks is 34.32m^2 and 7 tins of paint
Explanation:
Radius = diameter ÷ 2
Surface Area = 2 pi radius height + 2 pi radius^2
=2 (3.14) x 0.7 x 1.9 + 2 (3.14) x 0.7^2
= 11.44m^2
Total Surface Area of 3 Tanks = 11.44m^2 x 3
= 34.32 m^2
If 1 tin of paint covers 5m^2 then 1 tank takes 2
Why = 11.44m^2 / 5
=2.288
Therefore = 3 x 2
= 6
And maybe = 6 + 1
= 7
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Because if you devide 34.32m^2 with five you will have a balance of 6.864...... So 7
Tadaaaaaaaaaa