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3 years ago

What's the distance between (5, 13) and (9, 1)

Mathematics

1 answer:

givi [52]3 years ago

5 0

Answer: 16

Step-by-step 8+8

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Find area of the shaded portion of the figure

Nikitich [7]

Answer:

$\sf C) \quad 57 \frac34 \:cm^2$

Step-by-step explanation:

To find the shaded area, subtract the area of the semicircle from the area of the rectangle.

<u>Formulae</u>

$\textsf{Area of a rectangle}=\textsf{width} \times \textsf{length}$

$\textsf{Area of a semicircle}=\dfrac12 \pi r^2 \quad \textsf{(where r is the radius)}$

$\textsf{Diameter of a circle}=2r \quad \textsf{(where r is the radius)}$

<u>Area of rectangle</u>

Given dimensions of the rectangle:

width = 7 cm
length = 11 cm

Substituting these values into the formula:

$\implies \textsf{Area}=\textsf{7} \times \textsf{11}=77\: \sf cm^2$

<u>Area of semicircle</u>

Diameter of semicircle = 11 - 2 - 2 = 7 cm

⇒ Radius (r) = 7 ÷ 2 = 3.5 cm

$\textsf{let}\: \pi=\dfrac{22}{7}$

$\implies \textsf{Area}=\dfrac12 \left(\dfrac{22}{7}\right) (3.5)^2=19.25\: \sf cm^2$

<u>Area of shaded region</u>

= area of rectangle - area of semicircle

= 77 - 19.25

= 57.75

$\sf =57 \frac34 \:cm^2$

4 0

3 years ago

Please help it says to choose one or more!

ladessa [460]

Answer:

Step-by-step explanation:

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7 0

2 years ago

Read 2 more answers

A square playground has sides that are 17 meters long. What is the playground's area?

Sedbober [7]

The playground is 68 meters long

3 0

3 years ago

Please help meee, this is my homework . (Geometry) ... I’ll rate brainliest

Rama09 [41]

1. Volume of the sphere

$V = \frac 4 3 \pi r^3 = \frac 4 3 \pi ( 8^ 3) = \dfrac{2048 \pi}{3} \approx 
2144.66$

Choice c

2. Algebra making a token effort to pretend to be geometry. Complementary angles add to 90 degrees.

(x+1) + (x-3)=90

2x -2 = 90

2x = 92

x = 46

Angles x+1=47 and x-3=43

Choice b

3. midpoint A=-5, E=5

The midpoint is just the average of A and E, here zero, point D

choice b

4. I can't really tell if x is supposed to be an angle or a length in this figure; presumably a length. I suppose we're to assume parallel lines; so this makes similar shapes, i.e. a proportionality:

$\dfrac{24}{x} = \dfrac{36}{12} =3$