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.
- In each of the questions given below, four words are given in bold. These four words may or may not be in their correct position. The sentence is then foll...
- In each of the questions given below, four words are given in bold. These four words may or may not be in their correct position. The sentence is then foll...
Directions: Two sentences are given in the question below. Three words are emboldened in each of the sentences. Interchange the words to make meaningfu...
Directions : In each of the questions given below, four words are given in bold. These four words may or may not be in their correct position. The sent...
meant to ease travel for research,(A) study and work for people in both countries (B) India and Germany signed a Comprehensive Partnership(C) on Migr...
Warner is among cautious about give the money he purchase , on time.
Given below are a few questions with four highlighted words which may or may not require swapping in order to make sentence contextually and meaningfull...
In the following question, a part of the sentence is bold. Below the sentence alternatives to the bold part are given at (A), (B), (C), and (D) which m...
Given below are some questions with four highlighted words in each to be swapped if required in order to make the sentence contextually correct. If no...
In the following question, a sentence is given with a phrase highlighted in bold. Find out the phrase, among the phrases (a, b, c, d) given below each s...
Relevant for Exams:
