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3 years ago

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Mathematics

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nevsk [136]3 years ago

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Answer:

oe hello im from nepal follow me plz bro

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The radius of a circle is 4 feet. What is the area of a sector bounded by a 45° arc?

DIA [1.3K]

Answer:

$Area = 6.28\ ft^2$ or $Area = 2 \pi\ ft^2$

Step-by-step explanation:

Given

$Radius, r = 4ft$

$Angle, \theta = 45$

Required

Calculate the area of the sector

When angle is given in degrees, the area of sector is calculated as thus;

$Area = \frac{\theta}{360} * \pi * r^2$

$Substitute\ r = 4\ and\ \theta = 45$

$Area = \frac{\theta}{360} * \pi * r^2$ becomes

$Area = \frac{45}{360} * \pi * 4^2$

$Area = \frac{45}{360} * \pi * 16$

$Area = \frac{45*16}{360} * \pi$

$Area = \frac{720}{360} * \pi$

$Area = 2 * \pi$

$Area = 2 \pi\ ft^2$

The above is the area in terms of π

Solving further.... (Take π as 3.14)

$Area = 2 \pi\ ft^2$ becomes

$Area = 2 * 3.14\ ft^2$

$Area = 6.28\ ft^2$

Hence, the area of the sector is

$Area = 6.28\ ft^2$ or $Area = 2 \pi\ ft^2$

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3 years ago

Nathan is buying a cell phone for his business. The regular price of the cell phone is $899. If he

tiny-mole [99]

Answer:

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Step-by-step explanation:

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2 years ago

Make a ten or a hundred to add mentally 198+132=

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330 This the answer

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3 years ago

Without overlapping, how many college basketball courts 94ft x 50ft would fit into a football field 360ft x 160ft?

Volgvan

Area of basketball court: 94 x 50 = 4700 square feet

area of football field: 360 x 160 = 57600 square feet

57600 / 4700 = 12.26

so 12 basketball courts

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2 years ago

Which graph represents y as a function of x? <br> A) A <br> B) B <br> C) C <br> D) D

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Answer:

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Step-by-step explanation:

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3 years ago

Please Help me with this question​

Please Help me with this question