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3 years ago

What is the perameter of this

Mathematics

1 answer:

Phoenix [80]3 years ago

5 0

Answer:

Perimeter = 4.71 ft

Explanation:

Diameter = 3 ft

Radius (r) = 3/2 = 1.5 ft

Since, the figure is a half circle, it's perimeter will be = 2π*r/2 = π*r

Thus, perimeter = π*(radius) = 3.14*1.5 = 4.71 ft

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.i need help with math

Setler [38]

What’s the question?

6 0

3 years ago

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Look at the figure below:

quester [9]

Answer:

cos y° = b divided by 6

Step-by-step explanation:

Trigonometric ratios :

$Sin \theta = \frac{Perpendicular}{Hypotenuse}$

We are given that sin y° = a divided by 6

$sin y^{\circ}=\frac{a}{6}$

On comparing

Perpendicular = a

Hypotenuse = 6

$Tan \theta= \frac{Perpendicular}{Base}$

tan y°=a divided by b

On comparing

Perpendicular = a

Base = b

So, $cos \theta = \frac{Base}{Hypotenuse}$

$Cos y^{\circ}=\frac{b}{6}$

So, Option d is true

cos y° = b divided by 6

8 0

4 years ago

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A table is 3 feet and 2 inches wide, and a chair is 25 inches wide. How much wider is the table than the chair?

Lostsunrise [7]

<span>A table is 3 feet and 2 inches wide
= 3(12) + 2 = 38 inches wide

</span><span>a chair is 25 inches wide

38 - 25 = 13 inches

answer: table is 13 inches </span><span>wider than the chair</span>

6 0

4 years ago

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A father's age is 4 times as that of his son's age. in 5 years time, the father will be 3 times as old as his son. what are thei

Vadim26 [7]

Answer:

<h3>present age of son = 10 </h3><h3>present age of father = 40</h3>

Step-by-step explanation:

Let, present age of son be 'x'

present age of father be 'y'

y = 4x→ equation ( i )

After five years,

Son's age = x + 5

father's age = y + 5

According to Question,

$y + 5 = 3(x + 5)$

Put the value of y from equation ( i )

$4x + 5 = 3(x + 5)$

Distribute 3 through the parentheses

$4x + 5 = 3x + 15$

Move variable to L.H.S and change it's sign

Similarly, Move constant to R.H.S. and change its sign

$4x - 3x = 15 - 5$

Collect like terms

$x = 15 - 5$

Calculate the difference

$x = 10$

Now, put the value of X in equation ( i ) in order to find the present age of father

$y = 4x$

plug the value of X

$= 4 \times 10$

Calculate the product

$= 40$

Therefore,

Present age of son = 10

present age of father = 40

Hope this helps..

Best regards!!

8 0

3 years ago

Answer plz if you put a not so nice or relevent answer i will do the same

gladu [14]

Answer:

1. A 2.D

Step-by-step explanation:

G is the number of girls who attended so that will be our product.

Since 75% of the girls attended the dinner and there are 12 girls on the team we are trying to find a part of the team that attended the dinner so

we would multiply a decimal times the whole.

Convert 75% into a decimal

$\frac{75}{100} = 0.75$

Multiply that by 12 to equal G

$0.75(12) = g$

So the answer is A

Kim pick 2 1/3 lbs every 1/4 hour. We are asked how many she pick every hour.

Let set up a fraction to make the equation equivalent

$\frac{2 \frac{1}{3} }{ \frac{1}{4} } = \frac{x}{1}$

1/4 goes into 1 4 times. so we would multiply 4 by 2 1/3 to find the x value.

$2\frac{1}{3} \times 4$

$2 \frac{1}{3} \times \frac{12}{3}$

$\frac{7}{3} \times \frac{12}{3}$

$\frac{84}{9}$

$9 \frac{3}{9}$

$9\frac{1}{3}$

so the answer is D

4 0

3 years ago