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The perimeter of a right-angled triangle is 72 cm. The lengths of its sides are in the ratio 3 : 4 : 5 Work out the area of the triangle.

Let x be a number so that the sides of the triangle are 3x, 4x and 5x, because the ratio is 3 : 4 : 5. The perimeter is 3x+4x+5x=12x=72, meaning that x = 72/12 = 6. The sides of the triangle are 3 6=18, 4 6=...
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Answered by Vlad P. • Maths tutor
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What is cytokinesis?

Cytokinesis is really just a fancy word for cell division. It is an important stage in both mitosis and meiosis that allows 2 new cells to be produced from 1. The way this is achieved is through the use of a...
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Answered by Divine A. • Biology tutor
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How does blood flow and oxygenation work in respect to the chambers of the heart?

Firstly, blood from the IVC (inferior vena cava), carrying deoxygenated blood from most of the body, after oxygen has been removed from the blood, diffused into the tissues and used for respiration, enters t...
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Answered by Dhruv P. • Biology tutor
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Find the roots of x^2-9=0

Stage 1: Identify that the equation is a quadratic and that the question is asking you to find out which values 'x' fit this equation. Quadratics can be written algebraically in the form ax 2 +bx+c and have ...
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Answered by Jamie D. • Maths tutor
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Find the length of the hypotenuse of a right angled triangle which has other two sides of length 5 and 12.

When we have 2 sides of a right angled triangle, we can use Pythagoras' Theorem to find the third missing side. This theorem states that if we label the hypotenuse (the side opposite the right angle) as c , ...
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Answered by Andrew Y. • Maths tutor
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