2 years ago

How do i find the area of a semicircle

Mathematics

2 answers:

soldier1979 [14.2K]2 years ago

5 0

Pi times by radius to the second power divided by 2

Alex17521 [72]2 years ago

3 0

Find the area of the circle using A=pi * r^2 and then divide that answer by 2 and that will get you the area of the semicircle.

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Solve equation by using the quadratic formula.

adoni [48]

ANSWER IS C because I looked it up

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2 years ago

Write an equation of a circle that has the center at the origin and goes through (-3,-6)

dexar [7]

Answer:

$x^{2} +y^{2} = 45$

Step-by-step explanation:

General Equation of circle is

$(x-x_1)^{2} +(y-y_1)^{2} = r^{2}$ ----------- (1)

Here

$(x_1, y_1)= (0, 0)$

Radius r is distance from origin (x1, y1) to point (x2, y2)=(-3, -6)

$r=\sqrt{(x_2-x_1)^{2} + (y_2-y_1)^{2} }$

$r= \sqrt{(-3-0)^{2} + (-6-0)^{2} }$

$r= \sqrt{9+36}$

$r=\sqrt{45}$

Substituting values in equation (1)

$(x-0)^{2} +(y-0)^{2} =( \sqrt{45})^{2}$

$x^{2} +y^{2} = 45$

6 0

2 years ago

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Dima020 [189]

Answer:

Step-by-step explanation:

7 0

2 years ago

What is 3/16 divided by 1/4 fraction form

Ulleksa [173]

The answer to this is,1/4.

3 0

3 years ago

If I buy 3 4/5kg of cherries and 2 1/4 of strawberry's what is the Mass kilograms of fruit

lisov135 [29]

If you would like to know how many kilograms of fruit do you have, you can calculate this using the following steps:

3 4/5 kg of cherries + 2 1/4 kg of strawberries = 3 4/5 + 2 1/4 = 19/5 + 9/4 = 76/20 + 45/20 = (76 + 45) / 20 = 121/20 = 6 1/20 kg of fruit

The correct result would be 6 1/20 kilograms of fruit.

3 0

3 years ago