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natita [175]
3 years ago
12

A well of diameter 4m is dug 14m deep. The earth taken out is spread evenly all around the well to form a 40cm high embankment.

Find the width of the embankment
Mathematics
1 answer:
dimulka [17.4K]3 years ago
8 0

Answer:

82.72m

Step-by-step explanation:

Volume = πr2h

= 3.142*7*7*14

= 2,155.41m³

Now that we hav the volume of earth, we go on to find the raduis of the spread

2155.41m³ = 3.142*r²*0.4

2155.41m³ = 1.26r²

r² = 1,710.64

r = 41.36m

Width = diameter = 2r = 82.72m

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4 years ago
Read 2 more answers
A container holds 4 gallons 2 quarts of juice another container holds 1 3/4 gallons more than the first container altogether how
Tanya [424]

Answer:

10\frac{3}{4} gallons of juice altogether [or, 10 gallons 3 quarts]

Step-by-step explanation:

4 quarts = 1 gallon

So 2 quarts would be 1/2 gallon

Thus,

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4  1/2 gallons in first container

Next container holds 1  3/4 MORE, so that container holds:

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6 0
4 years ago
On scale drawing of a park, the length ofa trail is 12 cm from the playground to the pond and 15 cm from the pond to the parking
guapka [62]
The answer is 48 m
Solution:
In this situation,
15 cm = 60 m 
which means 1 cm = 60/15 m = 4m
therefore,
length of the trail between the playground and the pond in scale drawing= 12 cm
since, 1 cm= 4 m
therefore, 12 cm = 12*4 m = 48 m
the actual length of the trail b/w playground and pond = 48m
8 0
3 years ago
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