3 years ago

The length of a rectangle is 4cm greater than its width. the perimeter is 32 cm. find the length of the rectangle.

Mathematics

1 answer:

lord [1]3 years ago

3 0

The correct answer should be 12!

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What is the equation of the circle with center (4, 4) that passes through the point (10, 14)?

Katarina [22]

Answer:

Step-by-step explanation:

You use the given information in the standard form of a circle equation to solve for r. We have (h, k) which is the center and a point (x, y). The standard equation for a circle is

$(x-h)^2+(y-k)^2=r^2$

Filling in:

$(10-4)^2+(14-4)^2=r^2$ and

$6^2+10^2=r^2$ and

$r^2=136$

Now that we used the coordinate we don't need it anymore. x and y go back into the equation as x and y, not numbers. We do, however, need the center. Writing the equation:

$(x-4)^2+(y-4)^2=136$ which is choice D.