Explain The question with more detail
A dry cell is usually made of two parts: a zinc can<span> which serves as the </span>anode<span> with a negative potential and inert carbon rod is the positive </span>cathode<span>.</span><span>
According this definition, carbon rod is used to make the positive electrode of a dry cell.
Correct answer: B
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You have to divide 345 by 3 and get 115. Then multiply 115 by 4 and get 460. The ratio is 3:4.
A.
Never true. The angles of an equilateral triangle are 60° each, so an equilateral triangle can never be a right triangle which has one angle 90°.
b.
Possible. An isosceles right triangle has angles 45°, 45°, 90°.
c.
Possible. The angles of an equilateral triangle are 60° each, so it's always an acute triangle.
d.
Possible. For example a triangle with angles 70°, 70°, 40° - the angles are less than 90°, so they are all acute, and there are two angles with the same measure, so it's an isosceles triangle.
The answer is A.
