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CDE is the only tangent to circle O.
A chord is a straight line segment that connects two points on the circle. The longest chords are the ones that go through the center of the circle. Those are called diameters.
A) 60 because the numbers are multiplying by 60
To get this answer you must first get the VAT cost which we will get with the following steps.
First make the percent a decimal to do so move the . over to the left two times
Resulting in .20 now multiply it with 800
800(.20)=160
Now add 160 to 800
800+160=960
So the total cost for this TV is £960