Maths Mensuration part 8 (Questions) CBSE Class 8 Mathematics VIII

TL;DR

This video explains the concept of mensuration and demonstrates how to calculate the circumference and area of different shapes.

Transcript

hello friends this video on mensuration fact 8 is brought to you by example.com no more pure pram exam question on the file and am just moving around a few food pieces of different shapes status of the flow for which food eat food the and have to take a longer lon remember the track appearance of a circle can be obtained by using the expression C i... Read More

Key Insights

• ⭕ The circumference of a semicircle is calculated differently than that of a full circle.
• 🙃 To find the perimeter of a triangle, we add up the lengths of all three sides.
• ☺️ The area of a trapezium is calculated using the formula (1/2) x Height x (Parallel Side 1 + Parallel Side 2).

Questions & Answers

Q: How can we find the maximum distance covered by an ant on different shapes?

To determine the maximum distance, we need to calculate the circumference of each shape and compare them. The shape with the highest circumference will require the ant to travel the longest distance.

Q: What is the formula for finding the circumference of a semicircle?

The circumference of a semicircle can be calculated using the formula C = πr + d, where r is the radius and d is the diameter.

Q: How do we calculate the area of each section in a picture frame?

To find the area of each section, we need to use the trapezium formula. The formula is: Area = (1/2) x Height x (Parallel Side 1 + Parallel Side 2).

Q: How do we determine the width of each section in the picture frame?

By subtracting the inner dimensions from the outer dimensions, we can find the total width of the frame. Dividing this width by the number of sections will give us the width of each section.

Summary & Key Takeaways

• The video discusses how to calculate the perimeter of different shapes and determine which shape the ant can cover the maximum distance.

• It demonstrates the calculation of the circumference for a semicircle, triangle, and rectangle.

• The video also explains how to find the area of each section in a picture frame using the trapezium formula.