Maths Perimeter and Area part 4 (Questions) CBSE Class 7 Mathematics VII

TL;DR

This video demonstrates how to solve perimeter and area problems using practical examples in less than ten minutes.

Transcript

hello friends this video on perimeter and area part 4 is brought to you by example.com no more fear from exam question number two the area of a square park is the same as of a rectangular park so basically there are two parts one is in the shape of a square and the other one is in the shape of a rectangle and the problem says that the area of the s... Read More

Key Insights

• 💖 The video demonstrates how to find the breadth of a rectangular park when its area is equal to that of a square park.
• 😫 By setting the areas equal, the formula length * breadth = side * side is derived and used to solve for the breadth.
• 🇼🇫 To find the area of the wall to be whitewashed, the area of the door is subtracted from the total area of the wall.
• 🤒 The cost of whitewashing is calculated by multiplying the rate per square meter by the area of the wall to be whitewashed.
• 🥶 The video promotes an educational website that offers free quality education resources in various subjects.
• 🥶 The website provides video lessons, notes, and free online tests for classes 6 to 12 in subjects like physics, chemistry, mathematics, and biology.
• 🎮 Practical videos are available to enhance understanding of the subjects.

Questions & Answers

Q: What is the problem presented in the video?

The problem involves finding the breadth of a rectangular park whose area is equal to that of a square park, given the side length of the square and the length of the rectangle.

Q: How is the breadth of the rectangular park calculated?

By setting the area of the rectangular park equal to that of the square park and using the given values for length and side length, the formula length * breadth = side * side is used to solve for the breadth.

Q: What is the method used to determine the area of the wall to be whitewashed?

The video explains that the entire area of the wall, including the door, is calculated first. Then, the area of the door is subtracted from the total area to get the area of the wall to be whitewashed.

Q: How is the cost of whitewashing the wall calculated?

The rate of whitewashing per square meter is multiplied by the area of the wall to be whitewashed, resulting in the cost of whitewashing.

Summary & Key Takeaways

• The video presents a problem involving a square and rectangular park, where their areas are equal and dimensions are given.

• It explains the process of finding the breadth of the rectangular park.

• Another problem is introduced, involving finding the cost of whitewashing a wall, taking into account the area of a door.