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Butoxors [25]
3 years ago
9

A circular target is divided into four rings that have equal areas. If the radius of the target is 24cm, find the radius of the

circle at the centre of the target.
Mathematics
1 answer:
MAVERICK [17]3 years ago
6 0

THE AREA OF THE RING WHICH IS INSIDE CIRCULAR TARGET IS 12CM.

Step-by-step explanation:

A circular target which is divided into four rings of equal areas as given in the information

The area of the circular target is

Area = \pi * R².

As per the given data radius of the target 'R' is 24cm,

Area of circular target = \pi * 24²

=>  576 \pi.

let us consider radius of ring equals to 'r',

So, each of the ring has area of

=> Area of ring = (\pi * 576) / 4

=> 144 * \pi

Now let us consider area of the small ring inside circular target

Area of ring = \pi * r²

\pi * r² = 144  \pi

Taking off the \pi from both sides

r² = 144

r = 12.

Therefore radius of ring which is inside circular target is 12 cm.

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The average is the sum of the numbers divided by the number of numbers.

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Maria's height while jumping on a a trampoline can be modeled by the equation h=-16t^2+18t+5. Where t=time in seconds and h=heig
Vadim26 [7]

Answer:

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Step-by-step explanation:

Maria's maximum height will occur when her velocity reaches zero (0). This means that she has stopped ascending and is about to begin descent.

The equation for the height reached by Maria on the trampoline is given as:

h=-16t^2+18t+5

To find her maximum height, we first have to find the time it will take her to get to that height and corresponding velocity (zero).

Her velocity can be found by differentiating her height i.e. dh/dt:

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Therefore, when v = 0:

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It takes her 0.5625 seconds to get to her maximum height.

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