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kifflom [539]
1 year ago
7

A roundabout of a radius 7 yd laid with a carpet grass. find the area of the roundabout laid with carpet grass

Mathematics
1 answer:
Novay_Z [31]1 year ago
3 0

Area of roundabout = 153.86 yd2

we are given,

radius = 7 yd

Area of circle = π r^{2}

= 3.14 × 7× 7

= 153.86 yd2

<h3>What is the area of circle?</h3>

The area of a circle is the space occupied by the circle in a two-dimensional plane. Alternatively, the space occupied within the boundary/circumference of a circle is called the area of the circle. The formula for the area of a circle is A = πr2, where r is the radius of the circle. The unit of area is the square unit,

To learn more about area of circle from the given link

brainly.com/question/14068861

#SPJ4

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A coach purchases 47 hats for his players and their families at a total cost of $302. The cost of a small hat is $5.50. A medium
frosja888 [35]

Answer:

The answer is below

Step-by-step explanation:

Let x represent the number of small hat purchased, y represent the number of medium hat purchased and z represent the number of large hat purchased.

Since a total of 47 hats where purchased,  hence:

x + y + z = 47    (1)

Also, he spent a total of $302, hence:

5.5x + 6y + 7z = 302     (2)

He purchases three times as many medium hats as small hats, hence:

y = 3x

-x + 3y = 0    (3)

Represent equations 1, 2 and 3 in matrix form gives:

\left[\begin{array}{ccc}1&1&1\\5.5&6&7\\-3&1&0\end{array}\right] \left[\begin{array}{c}x\\y\\z\end{array}\right] = \left[\begin{array}{c}47\\302\\0\end{array}\right] \\\\\\\\ \left[\begin{array}{c}x\\y\\z\end{array}\right] =\left[\begin{array}{ccc}1&1&1\\5.5&6&7\\-3&1&0\end{array}\right] ^{-1} \left[\begin{array}{c}47\\302\\0\end{array}\right] \\\\\\ \left[\begin{array}{c}x\\y\\z\end{array}\right] = \left[\begin{array}{c}6\\18\\23\end{array}\right]

Therefore he purchases 6 small hats, 18 medium hats and 23 large hats

5 0
3 years ago
What's the graph of y=3x-5​
Svetach [21]

Answer:

Step-by-step explanation:

6 0
2 years ago
What is the span of the roof? A. 4 ft B. 12 ft C. 18 ft D. 24 ft
RoseWind [281]

Answer:

  D.  24 ft

Step-by-step explanation:

The slope of 1/3 means the rise is 1/3 the run for each half of the span. The rise is shown as 4 ft, so the half-span is 3·4 ft = 12 ft.

The span of the roof is 24 ft.

4 0
3 years ago
What is the distance between points (7 , 3) and (5 , -1)?
VladimirAG [237]
(7,3) = 4. (5, -1)=4.
8 0
3 years ago
Read 2 more answers
Please answer this really fast.
dolphi86 [110]

Answer:

abc = - 126

Step-by-step explanation:

(2x + 3)(3x - 1) ← expand product using FOIL

= 6x² + 7x - 3 ← in standard form

with a = 6, b = 7, c = - 3

Then

abc = 6 × 7 × (- 3) = - 126

4 0
2 years ago
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