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natulia [17]
2 years ago
10

A cylinder has a base diameter of 8 inches and a height of 7 inches. What is its volume in cubic inches, to the nearest tenths p

lace?
Mathematics
1 answer:
DaniilM [7]2 years ago
7 0

Answer:

351.9 cubic in

Step-by-step explanation:

The volume of a cylinder is hr²π.

r is half the diameter, so 8/2 is 4.

Plug in your h and r and get:

7 * 4² * π

7 * 16 * π

112π

Multiply the π and you'll get about 351.9 cubic in

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Happy Tuesday peeps brainliest and 5 star rating!!!!!!!!!!!!!!!!!
Scorpion4ik [409]
V=150.8
V=3.14*36*h/3
V=113.04*4/3
V=452.16/3
V=150.72
7 0
2 years ago
What is the value of the angle marked with <br> x?
egoroff_w [7]

Answer:

132°

Step-by-step explanation:

because the lines are parallel x + 48° must be 180°

therefore x = 132°

3 0
3 years ago
The figure below shows a quadrilateral ABCD. Sides AB and DC are congruent and parallel: A quadrilateral ABCD is shown with the
algol [13]

A Quadrilateral A B C D in which Sides AB and DC are congruent and parallel.

The student has written the following explanation

Side AB is parallel to side DC so the alternate interior angles, angle ABD and angle BDC, are congruent. Side AB is equal to side DC and DB is the side common to triangles ABD and BCD. Therefore, the triangles ABD and CDB are congruent by SAS.

The student has also written

angles DBC and ADB are congruent and sides AD and BC are congruent. Angle DBC and angle ADB form a pair of alternate interior angles. Therefore, AD is congruent and parallel to BC. Quadrilateral ABCD is a parallelogram because its opposite sides are equal and parallel.

Postulate SAS completely describes the student's proof.

Because if in a quadrilateral one pair of opposite sides are equal and parallel then it is a parallelogram.

 

6 0
2 years ago
The square root of a number consisting of two digits isequal
Gala2k [10]

Answer:

81

Step-by-step explanation:

Let the digits that make up the number be a and b.

Given that the square root of the number is equal to the sum of the digits.

Then,

√(10a + b) = a + b

Also given that the square root of the number is less than the number obtained by  interchanging the digits by 9, then

√(10a +b) + 9  = 10b + a

Since √(10a + b) = a + b, then

a + b + 9 = 10b + a

a - a + 9 = 10b - b

9b = 9

b = 1

since √(10a + b) = a + b

√(10a + 1) = a + 1

10a + 1= (a + 1)²

10a + 1 = a² + 2a + 1

a²  + 2a - 10a + 1 - 1 = 0

a² - 8a = 0

a(a - 8) = 0

a = 0 or a = 8

Using a = 8 and b = 1,

the number 10a + b = 10(8) + 1 = 81.

3 0
3 years ago
Plz help me!!!!!!!!!!
N76 [4]

Answer:

B) irrational

Step-by-step explanation:

<em>It can not be imaginary</em>, because imaginary numbers are √(negative number).

<em>It can not be rational</em>, because the cube root of 11 can not be displayed as a repeating or ending number (it's 2.22398009... by the way).

The only option is irrational.

5 0
2 years ago
Read 2 more answers
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