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WINSTONCH [101]
2 years ago
13

A bookmark is shaped like a rectangle with a semicircle attached at both ends. The rectangle is 16 cm long and 4 cm wide. The di

ameter of each circle is the width of the rectangle. What is the area of the bookmark? Use 3.14 for π.
Mathematics
1 answer:
Sedaia [141]2 years ago
3 0

Answer: 76.56sqcm

Step-by-step explanation:

Area of rectangle= length * width

= 16 * 4 = 64sqcm

Area of semicircle= (1/2)(r^2)π

r= d/2= 4/2= 2

Area of semicircle= (1/2)(2^2)(3.14)

= 6.28sqcm

Area of bookmark= Area of rectangle + 2*Area of semicircle

Area of bookmark= 64 + 2(6.28)

=64 + 12.56 = 76.56sqcm

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I really need help with this please help best aswer gets brainliest
svet-max [94.6K]

Answer:

Relative frequency is 7.41% or 0.0741

Step-by-step explanation:

Given

The Attached Table

Required

Calculate the relative frequency of the class with lower limit 27

Relative Frequency is calculated by dividing individual frequency by the total frequency

Mathematically,

Relative\ Frequency = \frac{Individual\ Frequency}{Total\ Frequency}

The total frequency of the given data is 6+8+4+2+5+2

Total\ Frequency = 27

The class with lower limit 27 has a frequency of 2;

Hence;

Relative\ Frequency = \frac{Individual\ Frequency}{Total\ Frequency} becomes

Relative\ Frequency = \frac{2}{27}

Relative\ Frequency = 0.07407407407

Relative\ Frequency = 0.0741 (Approximated)

You may also leave your answer in percentage form

Relative\ Frequency = 0.0741 * 100\%

Relative\ Frequency = 7.41 \%

Hence, the relative frequency is 7.41% or 0.0741

7 0
3 years ago
Read 2 more answers
There are 10 guest attending the gathering. There are 5 turkeys and each turkey weighs 4 pounds. If each person eaf the same amo
Westkost [7]

I think you have multiply 5x4 which equals 20 then 20 divided by 10 which equals 2 and that’s ur answer

5 0
3 years ago
A geologist visits 90 volcanoes in Alaska and California​
Viktor [21]

Answer:

40 volcanoes = 100% of them           15% were in California so if we want to know how much % were in Alaska we do 100% - 15% which equals 85%, so 85% were in Alaska.      Now to find out how many the geologist visited in each state multiply 40 by the percentage.       Number of volcanoes in California = 15% of 40 volcanoes = 0.15 x 40 = 6Number of volcanoes in Alaska = 85% of 40 volcanoes 0.85 x 40 = 34

Step-by-step explanation:

4 0
2 years ago
12) -7(-8 + y - 10 – x); use x = -3, and y = 10<br> A) 35<br> B) 40<br> C) 34<br> D) 25
cluponka [151]

Answer:

A

Step-by-step explanation:

56-70+70-21

126-91

35

5 0
3 years ago
Solve 4 brainliest xx
irga5000 [103]
C is on the line and D is not on the line.
-1/2(-40)+1=21
-1/2(20)+1≠-11
5 0
2 years ago
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