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Anton [14]
3 years ago
15

Find the circumference of a circle with radius 10.3 feet . Round your answer to two decimal places.

Mathematics
2 answers:
Natasha2012 [34]3 years ago
7 0

Answer:

Circunference = 64.68 feet

Step-by-step explanation:

Circunference = 2п r

п = 3.14

r = radius

then:

circunference = 2*3.14*10.3

circunference = 64,684

round to two decimal places:

circunference = 64.68ft

patriot [66]3 years ago
5 0

C= 2πr

r= 10.3ft

π= 22/7

C= 2×22/7 × 10.3

C= 64.74 feet

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Matrix transformation = \left[\begin{array}{ccc}-1&0\\0&1\end{array}\right]

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Step-by-step explanation:

Transformation by reflection will produce a new congruent object in different coordinate. Reflection to y-axis made by multiplying the x coordinate with -1 and keep the y coordinate unchanged. The matrix transformation for reflection across y-axis should be: \left[\begin{array}{ccc}-1&0\\0&1\end{array}\right].

To find the coordinate of the vertices after transformation, you have to multiply the vertices with the matrix. The calculation of the each vertice will be:

P'= \left[\begin{array}{ccc}-1&0\\0&1\end{array}\right] \left[\begin{array}{ccc}-5\\-2\end{array}\right]= (5,-2)

Q'= \left[\begin{array}{ccc}-1&0\\0&1\end{array}\right] \left[\begin{array}{ccc}-6\\-3\end{array}\right]= (6,-3)

R'= \left[\begin{array}{ccc}-1&0\\0&1\end{array}\right] \left[\begin{array}{ccc}-2\\-3\end{array}\right]= (2,-3)

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Step-by-step explanation:

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