Question : The outer radius of a spherical shell is 13 cm and the thickness of the shell is 3 cm. What is the volume of the metal used for the shell? $\left(\pi=\frac{22}{7}\right)$
Option 1: 1197 cm3
Option 2: 2197 cm3
Option 3: 3024 cm3
Option 4: 5016 cm3
New: SSC MTS Tier 1 Answer key 2024 out
Don't Miss: Month-wise Current Affairs | Upcoming Government Exams
New: Unlock 10% OFF on PTE Academic. Use Code: 'C360SPL10'
Correct Answer: 5016 cm3
Solution : The outer radius of a spherical shell, $R$ = 13 cm The thickness of the shell = 3 cm The inner radius of a spherical shell, $r$ = 13 – 3 = 10 cm The volume of the metal used for the shell = $\frac{4}{3} \pi (R^3-r^3)$ = $\frac{4}{3} × \frac{22}{7}× (13^3-10^3)$ = $\frac{4×22}{3×7} × (13-10)(13^2+10^2+13×10)$ = $\frac{88}{21} × 3 × (169+100+130)$ = $\frac{88}{7} × 399$ = 88 × 57 = 5016 cm3 Hence the correct answer is 5016 cm3.
Application | Cutoff | Selection Process | Preparation Tips | Eligibility | Exam Pattern | Admit Card
Question : A toy is in the shape of a cylinder surmounted by a hemisphere. The total height of the toy is 15 cm and the radius of the hemisphere is 6 cm. What is the volume of the toy?
Option 1: $496\pi$ cm3
Option 2: $476\pi$ cm3
Option 3: $458\pi$ cm3
Option 4: $468\pi$ cm3
Question : What is the height of a cylinder whose radius of base is 12 cm and volume is 19008 cm3? [Use $\pi=\frac{22}{7}$]
Option 1: 6 cm
Option 2: 24 cm
Option 3: 38 cm
Option 4: 42 cm
Question : The radius of a sphere is 14 cm. What is the surface area of this sphere? [Use $\pi=\frac{22}{7}$]
Option 1: 2464 cm2
Option 2: 1232 cm2
Option 3: 1848 cm2
Option 4: 616 cm2
Question : The Largest possible sphere is carved out of a cube of side 6 cm. What is the volume of the sphere?
Option 1: $\frac{792}{7}$ cm3
Option 2: $\frac{144}{7}$ cm3
Option 3: $\frac{133}{3}$ cm3
Option 4: $\frac{144}{3}$ cm3
Question : Find the curved surface area of a cone whose radius of the base is 7 cm and slant height is 8 cm. [Use $\pi=\frac{22}{7}$]
Option 1: 132 cm2
Option 2: 198 cm2
Option 3: 154 cm2
Option 4: 176 cm2
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile