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sweet [91]
2 years ago
13

Find the area and the circumference of a circle with diameter 3ft.

Mathematics
2 answers:
Alisiya [41]2 years ago
8 0

Answer:

Area=  7.065ft^2

Circumference= 9.42ft

Step-by-step explanation:

The area of a circle is,

area=Pi*r^2

and the circumference,

circumference=2*Pi*r

with r being the diameter/2

so we get,

area=(3.14)(1.5)^2=7.065ft^2

circumference=2(3.14)(1.5)=9.42ft

kakasveta [241]2 years ago
5 0

Answer:

Step-by-step explanation:

hello :

the circumference is :P=2pi×r=2×3.14×3= .... continu

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steposvetlana [31]

Answer:

x >_ 1

Step-by-step explanation:

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8 + 4x >_ 12

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Setler [38]
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3 years ago
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Find the area of a circle circumscribing an equilateral triangle of side 15cm.<br> Take pi = 3.14.
miskamm [114]

Answer:

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Step-by-step explanation:

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h = √3 /2 (15)

In an equilateral triangle the orthocenter, centroid, circumcenter and incenter are in the same spot

The center of the circle is the centroid and height match  with the median. The radius of the circumcircle is equal to two thirds the height.

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8 0
3 years ago
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Answer:

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13.8656

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