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stealth61 [152]
2 years ago
8

A sculpture is formed from a square-based pyramid resting on a cuboid. The base of the cuboid and the base of the pyramid are bo

th squares of side 3 cm. The height of the cuboid is 8 cm and the total height of the sculpture is 15 cm. The total mass of the sculpture is 738 g. The cuboid-part of the sculpture is made of iron with density 7.8 g/cm³. The pyramid is made from copper. Calculate the density, in g/cm³, of the copper.​
Mathematics
1 answer:
polet [3.4K]2 years ago
8 0

Answer:

7.8g/cm

Step-by-step explanation:

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Please help!! i am super confused
erastovalidia [21]

Answer:

The train appears to go the same distance each minute

9mins

The cost for each person appears to be the same

Step-by-step explanation:

So for the first qu you basically want to find  the distance the train travels each minute, so for

3mins : 9km

therefore

1min : 3km

basically divide 9 by 3

then the train travels 27km, how long does it take?

if 3km = 1min

then 27/3 = 9

so it takes the train 9 minutes

Then for the second qu you'll do the same thing

2ppl : $16

so one person : 16/2

so 1 person costs $8

so for 8 ppl you multiply 8 by 10

8ppl : $80

hope this helps:))))

6 0
2 years ago
1/6 1/2 5/6 _________ 1 1/2 what is the rule? and the missing number?
Alenkasestr [34]
The rule is, the numbers are each going up by 2/6's

E.g. 1/6 , 3/6 (= 1/2), 5/6 , the missing number is, 1 whole and 1/6
3 0
3 years ago
Read 2 more answers
PLS HELP WILL GIVE BRAINLY!!
Artist 52 [7]

Answer:

24 units ²

Step-by-step explanation:

In this problem, we are given the circumference of a triangle (after finding the perimeter) and want to find the area of a circle with that circumference. Since the area of a circle is a function based on its radius, we can use the circumference to find the radius to find the area.

First, we can figure out the perimeter of the triangle, which is equal to the sum of its sides. The perimeter is 6+4+7.21 = 17.21 units.

Next, the circumference of a circle is equal to π * diameter = π * 2 * radius. Using 3.14 for π and r for radius, we get

3.14 * 2 * r = 17.21

6.28 * r = 17.21

divide both sides by 6.28 to isolate r

r ≈ 2.74

Furthermore, to find the area from the radius, we can use

area = πr². Plugging 2.74 in for r, we get

2.74² * 3.14 = area

≈23.6, rounding up to 24 units ²

3 0
3 years ago
On a scale drawing 1/4 inch=1 foot. What are the dimensions on a Scale drawing of a room that is 20ft by 27ft
Gemiola [76]

Answer:

5 inches by \frac{27}{4} inches

Step-by-step explanation:

According to the scale given, to convert "feet" to "inches", we have to multiply each feet by 1/4th. The drawing would be a "smaller" version of the original. That would be in inches.

So, 20 ft would be:

20 * 1/4 = 20/4 = 5 inches

and

27 feet would be:

27 * 1/4 = 27/4 inches

The dimension would thus be:

5 inches by \frac{27}{4} inches

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4 years ago
If you are flipping a coin, what is the sample space?
OLEGan [10]
Head because is 50 chance
4 0
3 years ago
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