All categories

3 years ago

I need Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

quester [9]3 years ago

5 0

9514 1404 393

Answer:

150.72 cm³
314 cm³
160 cm³
48 cm³

Step-by-step explanation:

Put the given numbers in the relevant formula and do the arithmetic.

<u>right cylinder</u>

V = πr²h = 3.14(4 cm)²(3 cm) = 3.14×48 cm³ = 150.72 cm³

V = 1/3πr²h = 1/3(3.14)(5 cm)²(12 cm) = 3.14×100 cm³ = 314 cm³

<u>pyramid of unknown shape</u>

V = 1/3Bh = 1/3(16 cm²)(30 cm) = 160 cm³

<u>square pyramid</u>

V = 1/3s²h = 1/3(3 cm)²(16 cm) = 48 cm³

You might be interested in

The edge length of cube A is two times the edge length of cube B. How many times greater isthe volume of the cube A than the vol

allsm [11]

Answer:

<h2>8 times greater</h2>

Step-by-step explanation:

The formula of a volume of a cube:

$V=a^3$

a - edge length

-----------------------------------

The edge length of cube B is a.

The edge length of cube A is 2a.

Calculate the volumes:

$V_A=(2a)^3=2^3a^3=8a^3\\\\V_B=a^3$

How many times greater is the volume of the cube A than the volume of cube B?

Make the quotient:

$\dfrac{V_A}{V_B}=\dfrac{8a^3}{a^3}=8$

4 0

3 years ago

Find the first four terms of the recursive sequence defined by the following formula: an = an-1 4 where a4 = 2 1 4 , , , 2 1 4.

Elina [12.6K]

The first four-term of the sequence is found by the given equation $a_{n-1} = 4a_n$ is given as 144, 36, 9, and 9/4.

<h3>What is a sequence?</h3>

A sequence is a list of elements that have been ordered in a sequential manner, such that members come either before or after.

The given equation will be

$\rm a_n = \dfrac{a_{n-1}}{4} \\\\a_{n-1} = 4a_n$

And

$a_4 = 2 \dfrac{1}{4} = \dfrac{9}{4}$

For n = 4, we have

$\rm a_{4-1} = 4a_4\\\\a_3 \ \ \ = 4*\dfrac{9}{4} \\\\ a_3 \ \ \ = 9$

For n = 3, we have

$\rm a_{3-1} = 4a_3\\\\a_2 \ \ \ = 4*9 \\\\ a_2 \ \ \ = 36$

For n = 2, we have

$\rm a_{2-1} = 4a_2\\\\a_1 \ \ \ = 4*36 \\\\ a_1 \ \ \ = 144$

More about the sequence link is given below.

brainly.com/question/21961097

7 0

2 years ago

XYZ Toys makes a Feed-Me Baby Doll for $10.40. They mark up the cost by 55%. What is the selling price for the Feed-Me Baby Doll

Lesechka [4]

.............................

3 0

3 years ago

Helppppppp!!! One bus is 5 miles east and 2 miles north of the bus terminal. Another bus is 3 miles west and 6 miles south of th

morpeh [17]

Answer:

16 miles apart

Step-by-step explanation:

4 0

4 years ago

F(e+3) + 2(f+1) = 2(f-1)+5 , solve for e

Ivan

Answer:

Step-by-step explanation:

fe+3f+2f+2=2f-2+5

fe+5f+2=2f+3

fe+2=-3f+3

e=2/-3+3f

7 0

3 years ago