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3 years ago

Find the circumference and the area of a circle with diameter 8 yd.

Mathematics

2 answers:

elena-14-01-66 [18.8K]3 years ago

8 0

Answers:

area = 50.24 square yards

circumference = 25.12 yards

values are approximate

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Work Shown:

d = 8 is the diameter

r = 4 is the radius, half the diameter

pi = 3.14 approximately

C = 2*pi*r = circumference

C = 2*3.14*4

C = 25.12 yards is the circumference. The circumference is the distance around the circle, aka the perimeter

An alternative formula you can use is C = pi*d

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A = area of circle

A = pi*r^2

A = 3.14*4^2

A = 50.24 square yards is the area

Dafna11 [192]3 years ago

4 0

Answer:

25.12 and 50.24

Step-by-step explanation:

8/2=4

4= radius

8= diameter

3.14*8=25.12

This would be the circumfrence (25.12)

3.14*4^2

3.14*16

50.24

This would be the area (50.24)

Hope this helps!

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A circular mirror is surrounded by a square metal frame. The radius of the mirror is 2x. The side length of the metal frame is 8

Schach [20]

Answer:

183.43x2

Step-by-step explanation:

Area of the entire frame = (14x)2 = 196x2

Area of the mirror = pi(2x)2 = 4x2(pi)

Area of the frame surrounding the mirror = (196 - 4pi)x2 = 183.43x2

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1 year ago

Read 2 more answers

Two different ways to find the difference for 12-3

Gennadij [26K]

For this case we have:

way 1:
Common factor 3 in the expression:
$12-3 = 3 (4-1)

12-3 = 3 (3)

12-3 = 3 (9)$

Way 2:
Write the number 12 as the sum of 4 times 3:
$12-3 = (3 + 3 + 3 + 3) - 3
$
Then, for associative property:
$12-3 = 3 + 3 + 3 + (3 - 3)

12-3 = 3 + 3 + 3 + (0)

12-3 = 3 + 3 + 3

12-3 = 9$