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Feliz [49]
3 years ago
15

Volume of cones and cylinders worksheet

Mathematics
1 answer:
il63 [147K]3 years ago
7 0

Answer:

Volume of a cone: 1/3 x base x height

Volume of a cylinder: π x height x diameter

Hope this helps ;)

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I need help. also can you please explain your answer.​
vovikov84 [41]

Answer:

answer is A

Step-by-step explanation:

the bigger the angle the longer the opposite side is

to find angle f, add 42+65=107

180-107= 73

so <F is the biggest angle so DF is the longest side

6 0
3 years ago
Please, somebody, solve this quick and reply with step by step explanation AND provide all steps of working!
Alexxx [7]

Answer:

For a trapezium of height H, parallel side 1 X, and parallel side 2 Y, the area is:

A = (1/2)*H*(X + Y)

with this we can complete the table.

a)

Here we know:

X = 7cm

Y = 11cm

H = 6cm

Then: A = (1/2)*6cm*(7cm + 11cm) = 54 cm^2

b)

Here we know:

X = 8 m

Y = 10 m

A = 126 m^2

Then:

126 m^2 = 0.5*H*(8m + 10m)

126 m^2 = H*9m

126 m^2/9m = H = 14m

Then the height of this trapezoid is 14m

c)

Here we know:

X = 5mm

H = 8mm

A = 72 mm^2

Then:

72 mm^2 = 0.5*8mm*(5mm + Y)

72 mm^2 = 4mm*(5mm + Y)

72mm^2/4mm = 5mm + Y

18 mm = 5mm + Y

18mm - 5mm = Y

13 mm = Y

Then the parallel side 2 is 13 mm long.

7 0
3 years ago
Marvin spent 2.8 hours which is 35% of his time at the recreational center playing ping pong. How long was Marvin at the recreat
timofeeve [1]

Answer:

<u>3</u><u>5</u>×2.8

100

<u>9</u><u>8</u>

100= 0.98

6 0
2 years ago
Bob has 10 dollars. His parents took away 5 dollars because he did not do his chores. Then he got 25 more dollars from a friend.
Sauron [17]

Answer:

$30

Step-by-step explanation:

He first has 10 dollars. Then 5 is taken off.

So, 10-5=5

His friend gives him 25 more dollars

So, 25+5= 30

Hope this helped!

4 0
3 years ago
At the bank, Sheila made 5 deposits, each in the same amount. Her sister Sherri made 4 deposits, each in the same amount. Each o
irinina [24]

The equation would be 4y=5x       4(x+15)=5x             x+15=y

let x be the amount that Shelia deposits each time

let y represent the amount that Sherri deposits each time

4(x+15)=5x

4x+60=5x

-4x       -4x

60=x

Check:

x+15=y                  60+15=y                        y=75

4(75)=5(60)

300=300

Shelia deposits $60 each time.

5 0
2 years ago
Read 2 more answers
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