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son4ous [18]
2 years ago
7

Please help me I will give Brainlest

Mathematics
1 answer:
nalin [4]2 years ago
5 0

Problem 3

Circumference = pi*diameter

C = pi*d

C = 3.14*7.6

C = 23.864

C = 23.9

<h3>Answer:  23.9 cm</h3>

=======================================

Problem 4

A = area of square

A = side*side

A = 8*8

A = 64 square cm

B = area of circle

B = pi*r^2

B = 3.14*(5.5)^2 .... radius = 5.5 is half of diameter = 11

B = 94.985

C = area of shaded region

C = B - A

C = 94.985 - 64

C = 30.985

<h3>Answer:  30.985 square cm</h3>

=======================================

Problem 5

diameter = 6

radius = 3

area = pi*radius^2

A = pi*r^2

A = pi*3^2

A = 9*pi

A = 9*3.14

A = 28.26

<h3>Answer:  28.26 square millimeters</h3>
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