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4 years ago

54×12 estimated PLEASE HELP I'LL MARK YOU AS BRAINLIEST

Mathematics

1 answer:

DaniilM [7]4 years ago

6 0

about 500

54 is about equal to 50 and 12 is about equal to 10, 50*10 = 500

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The figure is made up of a cylinder and a cone. What is the volume of the composite figure? Use 3.14 for Pi. Round to the neares

Delvig [45]

Answer:

The volume of figure is 310.86 cm³

Step-by-step explanation:

First, you have to calculate the volume of cone and cylinder seperately by applying the formulas :

Cone,

$v = \frac{1}{3} \times \pi \times {r}^{2} \times h$

$let \: \pi = 3.14 \\ let \: r = 3 \\ let \: h = 9$

$v = \frac{1}{3} \times 3.14 \times {3}^{2} \times 9$

$v = 84.78 \: {cm}^{3}$

Cylinder,

$v = \pi \times {r}^{2} \times h$

$let \: \pi = 3.14 \\ let \: r = 3 \\ let \: h = 8$

$v = 3.14 \times {3}^{2} \times 8$

$v = 226.08 \: {cm}^{3}$

Next, you have to add up both volumes as the figure are made from cone and cylinder :

$v = 84.78 + 226.08$

$v = 310.86 \: {cm}^{3}$

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3 years ago

Find the area of the composite figure.

-Dominant- [34]

Answer:

I guess the correct answer is 116 cm

Step-by-step explanation:

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3 years ago

. Freddie swam 3/8 laps yesterday and 1/4 today. How many laps did he swim in total? IS

Ronch [10]

Answer:

5/8

Step-by-step explanation:

Freddie swam 3/8 laps yesterday

He also swam 1/4 laps today

Therefore the total lap swam can be calculated as follows

= 3/8 + 1/4

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3 years ago

Describe how to mentally calculate 1/10 of $12.50

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The account will have decreased by $2640 after 2/3 year.

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4 years ago