Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

Visualising Solid Shapes

Short Answer Type

21. Which are prisms among the following?

240 Views

22. How are prisms and cylinders alike?

486 Views

23. How are pyramids and cones alike?

319 Views

24. Is a square prism same as a cube? Explain.

403 Views

25. Verify Euler’s formula for these solids.

528 Views

Long Answer Type

26. Using Euler’s formula find the unknown.

(i) Here, V = 6 and E = 12
Since F + V - E = 2
∴ F + 6 - 12 = 2
or F - 6 = 2
or F = 2 + 6 = 8

(ii) Here, F = 5 and E = 9
Since F + V - E = 2
or 5 + V - 9 = 2
or V - 4 = 2
or V = 2 + 4 = 6

(iii) Here F = 20 and V = 12
Since, F + V - E = 2
∴ 20 + 12 - E = 2
or 20 + 12 - E = 2
32 - E = 2
or E = 32 - 2 = 30

234 Views