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3 years ago

Im so scared because if i get 1 more wrong i dont pass please help

Mathematics

2 answers:

sesenic [268]3 years ago

6 0

The answer is parallelograms :-)

oksano4ka [1.4K]3 years ago

3 0

Answer:

A!!!!!!

Step-by-step explanation:

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Answer:

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Aneli [31]

Answer: Length of AB is 16 cm

Step-by-step explanation:

Given: Diameter of a circle is 20 cm and CE = 4 cm

Now as shown in figure AO, BO, CO are radii

$\text { Radius } =\dfrac{\text {Diameter}}{2} = \dfrac{20}{2} = 10 cm$

Therefore

AO=BO=CO= 10 cm

Now

$OE = CO- CE \Rightarrow OE= 10 -4 = 6 cm$

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Therefore by Pythagoras theorem : In a right angle triangle the square of hypotenuse is equal to the sum of square of other two sides.

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$BO^2=BE^2+EO^2\\\\\Rightarrow 10^2= BE^2 +6^2\\\\\Rightarrow BE^2= 100-36\\\\\Rightarrow BE^2 = 64 \\\\\Rightarrow BE= 8 cm$

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$AB= 2\times BE = 2\times 8=16 cm$

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Step-by-step explanation:

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