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3 years ago

A circular fountain has a radius of 9.4 feet find its diameter and circumference to the nearest tenth

Mathematics

2 answers:

ad-work [718]3 years ago

7 0

Answer:

18.8 feet, 59.1 feet to the nearest tenth

Step-by-step explanation:

The diameter is the line drawn that divides the circle into two while the circumference is the perimeter of the circle. Both are a measure of the radius of the circle.

The diameter D = 2r where r is the radius of the circle

The circumference = 2Πr = ΠD where Π = 22/7

Given that the circular fountain has a radius of 9.4 feet

Its diameter = 2 × 9.4 feet = 18.8 feet

The circumference = 22/7 × 18.8 feet

=59.09 feet

≈ 59.1 feet to the nearest tenth

ollegr [7]3 years ago

7 0

Diameter = radius * 2
9.4 * 2 = 18.8
diameter is 18.8 feet
circumference = $\pi$ * diameter
c = 3.14 * 18.8
c = 59.032
circumference is 59 feet.

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The table displays the number and type of tickets bought for a play that was performed in both the afternoon and evening. Apply

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The sum of the first 100 positive whole numbers is 5050. What is the sum of the first 100 positive odd whole number?

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The series of odd numbers is:

1, 3, 5, 7, 9, 11, 13, ....

If you observe this series, it is an Arithmetic Series with first term as 1 and common difference of 2. Common difference is defined as the difference between two consecutive terms of the series. So by using the formula of sum of an Arithmetic Series, we can find the sum of first 100 positive odd whole numbers.

The formula for the sum of an Arithmetic Series is:

$S_{n}=\frac{n}{2}(2a_{1}+(n-1)*d)$

Here,

n = number of terms = 100

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Using the values, we get:

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Thus, the sum of first 100 positive odd whole numbers is 10,000.

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