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Ivenika [448]
3 years ago
15

A rectangle is placed around a semicircle as shown below. The length of the rectangle is 4ft. Find the area if shaded region. us

e the value 3.14 for pie, And do not round your answer.

Mathematics
1 answer:
Naya [18.7K]3 years ago
3 0

Answer: Area of shaded region is 1.72 ft²

Step-by-step explanation:

Area of shaded region = area of the rectangle - area of the semi circle.

The formula for determining the area of a circle is expressed as

Area = πr²

Where

r represents the radius of the circle.

π is a constant whose value is 3.14

Since we are dealing with a semi circle, then

Area of semi circle = 1/2 × πr²

From the diagram,

Diameter = 4 ft

Radius = diameter/2 = 4/2

Radius = 2 ft

Area = 1/2 × 3.14 × 2² = 6.28 ft²

Considering the triangle,

Length = diameter = 4 ft

Width = radius = 2 ft

Area of rectangle = 4 × 2 = 8 ft²

Area of shaded region

= 8 - 6.28 = 1.72 ft²

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Area for Shape p is 12, the name for the shape q is a rhombus.

Step-by-step explanation:

The shape p is a triangle for if you find the height of the shape which is 6 and the length of the base which is 4 multiply them together then divide by 2 to get the area.

8 0
3 years ago
A cyclist estimates that he will bike 80 miles this week. He actually bikes 75.5 miles. What is the percent error of the cyclist
maw [93]

Answer:

<em>The percent error of the cyclist's estimate is 5.63%</em>

Step-by-step explanation:

<u>Percentages</u>

The cyclist estimates he will bike 80 miles this week, but he really bikes 75.5 miles.

The error of his estimate in miles can be calculated as the difference between his estimate and the real outcome:

Error = 80 miles - 75.5 miles = 4.5 miles

To calculate the error as a percent, we divide that quantity by the original estimate and multiply by 100%:

Error% = 4.5 / 80 * 100 = 5.625%

Rounding to the nearest hundredth:

The percent error of the cyclist's estimate is 5.63%

5 0
2 years ago
Will, Micah and sue went to dinner. Will paid 1/3 of the dinner bill. Micah and sue paid in the ratio of 2:5. If sue paid $6 mor
seraphim [82]
Cost = c
names are abbreviated

w = 1/3c

s = 1/3c + 6

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6 0
3 years ago
Inverse of f(x)=2x^2+5
vagabundo [1.1K]
I hope this helps you

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3 years ago
Plz help me with this question
Mila [183]
The correct answer is 1 inch.
4 0
3 years ago
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