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3 years ago

If a circle has a diameter of 18 how many square inches is the circle?

Mathematics

2 answers:

Genrish500 [490]3 years ago

7 0

Answer:

254.47

Step-by-step explanation:

$\frac{18}{2}$

Mice21 [21]3 years ago

5 0

9 square inches would be the answer

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City A is 10 miles from city B and 5 miles from city C. Cities A, B, and C form a right triangle at A. A road connects cities B

laila [671]

Answer:

11.18 miles

Step-by-step explanation:

The sides of a right triangle a, b, c are related by the equation

a^2 + b^2 = c^2

where c is the longest side of the triangle

Hence given that A connects B and C directly and forms a right angle at A

5^2 + 10^2 = c^2

Where c is the length of the road

25 + 100 = c^2

125 = c^2

c = 125^1/2

= 11.18 miles

3 0

3 years ago

X^2=1/4 please help me

skelet666 [1.2K]

X² = 1/4 ⇒√⇒ x₁ = 1/2, x₂ = -1/2

5 0

3 years ago

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Solution to equation ? 5/6 X = -1/6 A. -1/5 B. 1/5 C. -5 D. 5

dezoksy [38]

(5/6) x = -1/6 (multiply times 6/5)

x = -1/5

7 0

4 years ago

Read 2 more answers

Help anyone? you dont have to i just want to do this fast

KatRina [158]

Answer:

Step-by-step explanation:

I'm thinking cu

5 0

3 years ago

Charlie's garage has a rectangular floor space. Its length is 3 times its width. Charlie extends the width of his garage to 6 m,

MAXImum [283]

Answer:

The percentage change is 140%

Step-by-step explanation:

Given

$L= 3W_1$ ---- initial dimension

$W_2 = 6m$ --- new width

$A_2 = 45m^2$ --- new dimension

Required

The percentage increment

The length remains constant because only the width is extended.

The new area is:

$Area =Length * Width$

$A_2=L * W_2$

Make L the subject

$L = \frac{A_2}{ W_2}$

Substitute values for A and W

$L = \frac{45m^2}{6m}$

$L = \frac{45m}{6}$

$L = 7.5m$ --- this is the length of the garden

Calculate the initial width:

$L= 3W_1$

Make W1 the subject

$W_1 = \frac{1}{3} * L$

$W_1 = \frac{1}{3} * 7.5$

$W_1 = 2.5$

So, the initial area is:

$A_1 = L_1 * W_1$

$A_1 = 2.5 * 7.5$

$A_1 = 18.75$

The percentage change in area is:

$\%A = \frac{A_2 - A_1}{A_1}$

$\%A = \frac{45 - 18.75}{18.75}$

$\%A = \frac{26.25}{18.75}$

$\%A = 1.4$

Express as percentage

$\%A = 1.4*100\%$

$\%A = 140\%$

4 0

3 years ago