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3 years ago

A circle has a diameter of 20 mm what is it’s circumference? Use 3.14 for pi and do not round your answer

Mathematics

2 answers:

Dvinal [7]3 years ago

8 0

Answer:

94.2

Step-by-step explanation:

circumference is d(pi)

20(3.14) = 94.2

Bas_tet [7]3 years ago

7 0

Answer:

The circumference of the circle is 62.8 mm.

Step-by-step explanation:

We must first know the formula for finding the circumference.

C = dπ

Let's plug in our diameter. We will use 3.14 for pi.

C = (20)(3.14)

Multiply the numbers together.

C = 62.8

So, the circumference of a circle with a diameter of 20 mm is 62.8 mm.

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A pole that is 3.1 m tall casts a shadow that is 1.18 m long.At the same time , a nearby tower casts a shadow that is 35.75 m lo

Georgia [21]

Answer:

94 m

Step-by-step explanation:

Write a proportion:

3.1 / 1.18 = x / 35.75

Cross multiply and solve:

1.18x = 3.1 × 35.75

1.18x = 110.825

x ≈ 94

Rounded to the nearest meter, the height of the tower is approximately 94 meters.

7 0

3 years ago

Write a rule to describe the function shown.

I am Lyosha [343]

Answer:

y = -3x

Step-by-step explanation:

(a) Slope

y = mx + b

Choose points (-3, 9) and (3, -9)

m = (-9 - 9)/(3 – (-3))

m = -18/(3 + 3)

m = -18/6

m = -3

=====

(b) y-intercept

y = mx +b

Choose point (0,0).

0 = 0 + b

b = 0

=====

(c) Equation of line

y = mx + b

y = -3x

6 0

3 years ago

Jake sold 28 tickets to the the school fair and Jeanie sold 21 tickets. What is the ratio in the simplest for of the number of t

HACTEHA [7]

A. 3/4, you just have to simplify 21/28

4 0

3 years ago

Center: (-9, -3), point on circle: (-11, 2)

Vsevolod [243]

Answer:

y = - $\frac{5}{2}$ x- $\frac{51}{2}$

Step-by-step explanation:

6 0

3 years ago

graham's monthly bank statement showed the following deposists and withdrawals: -$25.20,$52.75,-$22.04,-$8.50,$94.11 if graham's

dezoksy [38]

Answer= $138.98

47.86-25.20+52.75-22.04-8.50+94.11=$138.98

3 0

3 years ago