Draw the figure for Square prism and verify Euler's formula.

Important Questions on Enrichment Activities (Based on Chapters 13–19)

EASY

8th CBSE

IMPORTANT

Number Magic a textbook of Mathematics 8>Chapter 31 - Enrichment Activities (Based on Chapters 13–19)>ENRICHMENT ACTIVITIES (Based on Chapters 13-19)>Q A

The discount percent when MP is $₹400$ and selling price is $₹300$ is  _____. (Give your answer without sign).

EASY

8th CBSE

IMPORTANT

Number Magic a textbook of Mathematics 8>Chapter 31 - Enrichment Activities (Based on Chapters 13–19)>ENRICHMENT ACTIVITIES (Based on Chapters 13-19)>Q A

If a discount of $5\%$ is offered on MP of $₹1500$, then the discount is $₹$ _____

EASY

8th CBSE

IMPORTANT

Number Magic a textbook of Mathematics 8>Chapter 31 - Enrichment Activities (Based on Chapters 13–19)>ENRICHMENT ACTIVITIES (Based on Chapters 13-19)>Q A

A solid made up of polygonal faces is called a _____.

EASY

8th CBSE

IMPORTANT

Number Magic a textbook of Mathematics 8>Chapter 31 - Enrichment Activities (Based on Chapters 13–19)>ENRICHMENT ACTIVITIES (Based on Chapters 13-19)>Q A

_____ is a solid which has one vertex only.

EASY

8th CBSE

IMPORTANT

Number Magic a textbook of Mathematics 8>Chapter 31 - Enrichment Activities (Based on Chapters 13–19)>ENRICHMENT ACTIVITIES (Based on Chapters 13-19)>Q A

A triangular pyramid is called a _____.

MEDIUM

8th CBSE

IMPORTANT

Number Magic a textbook of Mathematics 8>Chapter 31 - Enrichment Activities (Based on Chapters 13–19)>ENRICHMENT ACTIVITIES (Based on Chapters 13-19)>Q D

The dimensions of a rectangular box are in the ratio $2 : 3 : 4$ and the difference between the cost of covering it at the rate of $₹4$ and $₹4.50$ per ${\mathrm{m}}^2$ is $₹416$. Find the dimensions of the box.

HARD

8th CBSE

IMPORTANT

Number Magic a textbook of Mathematics 8>Chapter 31 - Enrichment Activities (Based on Chapters 13–19)>ENRICHMENT ACTIVITIES (Based on Chapters 13-19)>Q D

A solid cube of side $12 \mathrm{cm}$ is cut into eight cubes of equal volume. What will be the side of the new cube? Also find the ratio between their surface areas.

MEDIUM

8th CBSE

IMPORTANT

Number Magic a textbook of Mathematics 8>Chapter 31 - Enrichment Activities (Based on Chapters 13–19)>ENRICHMENT ACTIVITIES (Based on Chapters 13-19)>Q D

If the diameter of the cross section of a wire is decreased by $5\%$, by what percent should its length be increased, so that the volume remains the same?