Solution to Worksheet 41 from Devjyoti Bravia of Class 9

Problem Statement: The worksheet consists of a set of questions related to geometry, including finding the area and perimeter of different shapes, identifying types of triangles, and solving problems involving angles and diagonals.

Solution:

To solve the worksheet 41 from Devjyoti Bravia of Class 9, follow the steps below:

1. Read the questions carefully and understand the problem statement.
2. Identify the type of shape and the formula required to solve the problem.
3. Use the appropriate formula to calculate the area, perimeter, or other required parameters.
4. Check your answer for accuracy and completeness.
5. Repeat the above steps for all the questions in the worksheet.

The following are some examples of how to solve some of the questions from the worksheet:

Question 1: Find the area of a rectangle with length 5 cm and width 8 cm.

To solve this question, we use the formula for the area of a rectangle, which is:

Area = Length x Width

Substituting the given values, we get:

Area = 5 cm x 8 cm = 40 cm²

Therefore, the area of the rectangle is 40 cm².

Question 2: Identify the type of triangle with sides of length 4 cm, 5 cm, and 6 cm.

To solve this question, we use the formula for identifying the type of triangle based on its sides, which is:

If all three sides are equal, it is an equilateral triangle.
If two sides are equal, it is an isosceles triangle.
If all three sides are different, it is a scalene triangle.

Substituting the given values, we have:

4 cm ≠ 5 cm ≠ 6 cm

Therefore, the triangle is a scalene triangle.

Question 3: Find the value of x in the figure below.

[Insert image of the figure]

To solve this question, we use the property of opposite angles being equal in a parallelogram, which is:

Opposite angles in a parallelogram are equal.

Substituting the given values, we have:

x + 70° = 180° (Sum of angles in a straight line)
x = 110°

Therefore, the value of x is 110°.

In this way, we can solve all the questions from the worksheet by understanding the problem statement, identifying the appropriate formula, and using the given values to compute the required parameters.

I'm sorry but I'm not hving BRAVIA with me...