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3 years ago

The circumference of a circle is 9 pi m. What is the area, in square meters? Express

Mathematics

2 answers:

Ksivusya [100]3 years ago

8 0

Answer:

20.25 m²

Step-by-step explanation:

the area (A) and circumference (C) of a circle are calculated using the formulae

C = 2πr and A = πr² ( where r is the radius )

calculate the radius using the formula for circumference

2πr = 9π ( divide both sides by 2π )

r = = = 4.5, hence

A = π × 4.5² = 20.25π m²

Ad libitum [116K]3 years ago

4 0

Answer:

$Solution,\\Circumference=9\pim \\Diameter(d)=9\pi /\pi =9m\\Radius(r)=9m/2=4.5m\\Now,\\ Area=\pi r^{2} \\Area=\pi *(4.5m)^{2} \\Area=\pi *20.25m^{2} \\Area=20.25\pi m^{2}$

Step-by-step explanation:

Hope it will help you a lot.

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3 years ago

The grocery store charges $6.85 for 5 bags of potatoes.if someone bought 7 bags of potatoes, how much would it cost them

Hoochie [10]

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3 years ago

Carla and Jonah are working together to determine if quadrilateral CDEF with coordinates C(2, 3), D(1, 2), E(4, 1), and F(5, 3)

alukav5142 [94]

Answer:

Option (B)

Step-by-step explanation:

CDEF is a quadrilateral having vertex C(2, 3), D(1, 2), E(4, 1), F(5, 3).

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$m_1\times m_2=-1$

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Since CD and DE are the consecutive sides of the quadrilateral, Carla is on the right track by finding the slopes of CD and DE.

Since Jonah is finding the slopes of opposite sides so he will not be able to use the property of perpendicular lines.

Option (B) will be the answer.

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3 years ago