3 years ago

Find the point where the two lines intersect. Graph the lines.

Mathematics

1 answer:

ivann1987 [24]3 years ago

3 0

Answer:

3,-4

Step-by-step explanation:

im not sure if this is right or not but I tried

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3 years ago

Help me on calculating the area of the shaded part

Ymorist [56]

Answer:

$1051 .55 {mm}^{2}$

Step-by-step explanation:

Find the area of the square - area of 4 sectors

We'll use the formula to find one sector area

$a = \frac{1}{2} \times {r}^{2} \times x$

where r is the radius of one sector and x is the angle in radians

Since each angle is in a square, the angle of the sectors is 90 degrees.

Convert degrees to radians

$90 = \frac{1}{2} \pi \: rad$

The radius of one sector is given by 70mm/2=35mm

One sector area:

$\frac{1}{2} \times {35}^{2} \times \frac{1}{2} \pi = 306.25\pi$

Area of all 4 sectors:

$4 \times 306.25\pi = 1225\pi$

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$70 \times 70 = 4900$

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