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Sladkaya [172]
2 years ago
14

You might need: 3 Calculator

Mathematics
1 answer:
Aleks04 [339]2 years ago
8 0

Answer:

3.14 or pi

Step-by-step explanation:

the area of a circle = pi * r^{2} where r is the radius of the circle

this is 1/4 of the circle, so it would be 1/4 (pi * r²)

it shows that the radius is 2, so you have

1/4 ( pi * 2²)

= 1/4 ( pi * 4 )

= 1/4 (3.14 * 4)

= 3.14 units²

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Answer:

A. -11

Step-by-step explanation:

In the function, replace x with -2

R(x) = x^2 - 3x - 1 ➡ R(-2) = (-2)^2 - 3 × 2 -1 = -11

5 0
3 years ago
A rectangular prism is 7 centimeters long, 5 centimeters wide, and 4 centimeters tall. Which values are the areas of cross secti
VladimirAG [237]
Cross section is the area you make when you make a cut across a shape. In this case, the cut must be parallel to the base. Hence, the cut shape would be same to that of the base. The base's dimensions are 7 cm long x 5 cm wide. Thus, the cross section area is 35 square centimeters.
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o-na [289]

Answer:

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Step-by-step explanation:

Equation is:

y = \frac{x}{9}

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4 0
3 years ago
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The circle C has centre A(2,1) and passes through the point B(10,7). Find and equation for C
Semmy [17]
The equation of a circle:
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A(2,1) - \hbox{the centre} \\
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(x-2)^2+(y-1)^2=r^2 \\ \\
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(10-2)^2+(7-1)^2=r^2 \\
8^2+6^2=r^2 \\
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\hbox{the equation:} \\ \boxed{(x-2)^2+(y-1)^2=100}
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3 years ago
I need help please and thank you
Sedaia [141]

Answer:

20 hours

Step-by-step explanation:

3 0
3 years ago
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