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The radius of a hemisphere and the radius of a cylinder are equal. The hemisphere and cylinder have equal volume. Calculate the ratio of the height of the cylinder and the radius of the cylinder.

Let radius of cylinder be r. Let height of cylinder be h. We know that the volumes of the hemisphere and cylinder are equal:2(pi)r 3 /3 = h(pi)r 2 .Multiplying both sides by 3 and dividing both sides by pi a...
OM
Answered by Oskar M. • Maths tutor
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How should you structure a question worth 8 marks?

8 marks can be achieved through two well-developed, equal paragraphs, each earning 4 marks.The first step is a direct answer: at the beginning of each paragraph the student should give a 'first-sentence answ...
MK
Answered by Marcus K. • History tutor
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What is the density of a rock (mass 75g) submerged in water which displaced by a volume of 37.5cm^3? SI units

75g = 0.075kg/ 37.5cm 3 = (37.5 divided by 100 3 ) m 3 = 3.75 10 -5 m 3 / density = mass divided by volume/ 0.075 divided by 3.75 10 -5 = 2000kg/m 3
MH
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The hypotenuse of a triangle is 10m and another side is 8m. What is the length of side x?

X=6m
Answered by • Maths tutor
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Define osmosis

The movement of water through a partially permeable membrane.
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Answered by Zaynah Q. • Biology tutor
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