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GCSE

Find the area of a sector with a radius of 5cm and an angle of 120 degrees?

pi r r

pi 5x5

25pi = 360 degrees 

120/360 x 25pi = 25/3 pi

Teaching Points:

Area of a circle + other formalue for circumfrence 

Degrees of a circle 

Fracti...

AP
Answered by Anish P. • Maths tutor
5133 Views

Which of these is a correctly balanced equation for respiration? C6H12O6 + 3O2 → CO2 + 3H2O C6H12O6 + 6O2 → 6CO2+ 6H2O C6H12O6 + 6O2 → 6CO2 + 3H2O

Teaching points:

Go through balancing equations 

Formalae of glucose 

Different types of Respiration - and how to balnce other equations 

Respiration in animals vs plants 

...
AP
Answered by Anish P. • Biology tutor
9144 Views

How do you measure the gradient of a straight line joining two points?

There is a simple method for working out the gradient of a straight line joining any two points, for which the X and Y coordinates are known. For instance, if our first point is: A(X1,Y1

AT
Answered by Alex T. • Maths tutor
12149 Views

A patient has the cold, explain to them why antibiotics can only be used to treat certain types of infection and the issues that develop when antibiotics are used too much.

Infections can be caused by bacteria, viruses or fungi. Antibiotics are a class of drug designed to kill or stop the growth of bacteria. They cannot be used to t...

CS
Answered by Catherine S. • Biology tutor
3350 Views

What is terminal velocity? (falling bodies)

When an object falls down through a fluid (e.g. water, oil, air..) there are usually two forces acting on it. They are the weight force acting downwards and the drag force acting upwards. The weight force...

GF
Answered by George F. • Physics tutor
6194 Views

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