The minimum number of triangles needed to construct the polygon Sophia made is 3. Which could show Sophia’s polygon?
2 answers:
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Answer:
Yes, 1 kg of paint is enough to completely paint the inside and outside surfaces of the vessel.
Step-by-step explanation:
For the given vessel without a lid,
diameter = 0.4 x 1.5
= 0.6 m
radius = =
= 0.3 m
Total external surface area of the vessel = 2rh +
= [2 x x 0.3 x 1.5] + [
x
]
= 2.8286 + 0.2829
= 3.1112
Total external surface area of the vessel is 3.1112 square meter.
Total internal and external surface area = 2 x 3.1112
= 6.2224
But for 1 square meter, 150 g of paint is consumed. Thus;
for 6.2224 = 6.2224 x 150 g
= 933.36 g
Thus, 6.2224 of area would require 933.36 g of paint.
So that,
= 0.93336 kg
Therefore, 1 kg of paint is enough to completely paint the inside and outside surfaces of the vessel.