Question
A solid metallic rectangular block of dimensions 112 cm
× 44 cm × 25 cm is melted and recast into a cylinder of radius 35 cm. The curved surface area (in cm²) of the cylinder is: (Take π  = 22/7)Solution
Let the height of the cylinder be h According to the question, 112 × 44 × 25 = (22/7) × 352 × h ⇒ (112 × 44 × 25 × 7)/(22 × 35 × 35) = h ⇒ h = 32 So, the height of the cylinder = 32 cm Now, Curved surface area of the cylinder = 2 × (22/7) × 35 × 32 ⇒ 44 × 5 × 32 ⇒ 7040 ∴ The curved surface area (in cm2) of the cylinder is 7040.
Select the option that is related to the third letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster.
<...Select the option that is related to the fifth letter-cluster in the same way as the second letter-cluster is related to the first letter cluster and t...
Statements: N > U < I ≤ R < D < A; K ≥ O = G > X = E > A
Conclusions:
I. R < E
II. K > D
III. U ≥ X
...Select the option in which the numbers are related in the same way as are the numbers of the following set.
(14, 56, 28)
If F = 12, FED = 30, then ‘FEED’ will be equal to?
Select the set in which the numbers are related in the same way as are the numbers of the following set.
(NOTE: Operations should be performed on...
Who sits adjacent to S?
In the following question below are given some statements followed by some conclusions based on those statements. Taking the given statements to be tru...
34 is related to 155 by certain logic. Following the same logic, 49 is related to 168. To which of the following is 68 related, following the same logic?
Select the option that is related to the third letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster.
...