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Westkost [7]
3 years ago
6

There are 100 students in a blind school. Mr.and Mrs. Ramesh wished to serve them milk. They served the milk in a hemispherical

bowl with daimeter 21cm made up of ecofreindly material to each student.
(A) How many litres of milk was served by them to all 100 students.
(B) What was the total cost of milk if the rate of the milk was Rs.10 per litre ?
(C) Write the value shown by them.
Mathematics
1 answer:
zysi [14]3 years ago
6 0
A) The radius of the hemisphere is:
r = d÷2 = 21÷2 = 10.5cm

We can now calculate the volume of a hemisphere:
V = 2/3 π r<span>³
   = </span> 2/3 π (10.5)³
   = 2423 cm³

As we can consider that 1000cm³ contains 1l, each bowl contains 
2423 ÷ 1000 =2.423l.
In total, the milk served will be: 2.423 × 100 = 242l

B) The total cost will be: 
242 × 10 = 2420Rs

C)<span> Mr.and Mrs. Ramesh helped blind students using an eco-friendly material, therefore they have shown social and environmental values.</span>
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Answer:

x =

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First, add like terms. You can take out the x if it's too confusing and add it again.

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(add back the x → -7/12x)

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(-12/7) (-7/12x) = (-56) (-12/7)

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3 years ago
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Semenov [28]

Answer:  the answer that I got was 24

Step-by-step explanation:

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The+perimeter+of+the+quadrilateral+is+45+centimeters+find+the+length+of+each+side
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The length of the sides are 11.5 + 11.5 + 11 + 11.

Step-by-step explanation:

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Diano4ka-milaya [45]

15. 70° because a right angle is 90° and we have the angle of ADB which is 20°. So 90°-20°=70°.

16. 70° because angle PSQ is 60° and angle QSR is 10°. So 60°+10°=70°.

17. 55° because it says it in the explanation. I assume this is a typo and they meant to ask the measurement of ADC and in that case it would be 130° because angle ADB is 75° and angle BDC is 55°. 75°+55°=130°.

18. 40° because angle PSQ is a right angle which means it's 90°. So 130°-90°=40°.

19. 140° because angle ADB is 120° and angle BDC is 20° so 120°+20°=140°.

20. 125° because again it's in the explanation. But if it's a typo and they meant what is the measurement of PSQ then it is 50° because PSR is 125° and QSR is 75° so 125°-75°=50°.

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