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34kurt
2 years ago
12

Find area of shaded regions​

Mathematics
1 answer:
vagabundo [1.1K]2 years ago
5 0

Answer:

1039.5 cm²

Step-by-step explanation:

Area (shaded) = 22/7 x 21 x 21 - 22/7 x 21/2 x 21/2

= 1386 - 346.5

= 1039.5 cm²

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7 0
3 years ago
3. What are the intersection points of the line whose equation is y=3x +3 and the
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Answer:

Points of intersection of these graphs are (-2, -3) and (0.6, 4.8).

Step-by-step explanation:

Equation of the circle → (x - 2)² + y² = 25 ---------(1)

                                   → (x - 2)² + (y - 0)² = 5²

By comparing this equation with the standard equation of the circle,

(x - a)² + (y - b)²= r²

Here (a, b) is the center and r is the radius of the circle.

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Second equation is a linear equation → y = 3x + 3 -------(2)

x-intercept of the equation → x = -1

y-intercept of the equation → y = 3

By graphing these equations we can get the point of intersections.

Solving these equations algebraically,

Substitute the value of y from equation (2) in the equation (1),

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x = \frac{-7\pm13}{10}

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From equation (2),

y = -3, 4.8

Therefore, points of intersection of these graphs are (-2, -3) and (0.6, 4.8).

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3 years ago
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Step-by-step explanation:

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3 years ago
Read 2 more answers
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Answer:

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Step-by-step explanation:

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5 0
2 years ago
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