A square shaped room with length 21m and Perimeter 81m. Find the breadth
Answers
yeh lo explanation
Step-by-step explanation:
Perimeter is the distance around a closed figure whereas area is the part of the plane occupied by the closed figure.
The perimeter of the following geometrical shapes are discussed in the first section:
Square
Perimeter of a square = 4 × side
Rectangle
Perimeter of a rectangle = 2 × (length + breadth)
The section is divided into two sub-parts:
1. Triangles as parts of rectangles
2. Generalising for other congruent parts of rectangles
Before moving onto exercise 11.2, the topics Area of triangle and parallelogram are discussed.
Area of a square = side × side
Area of a rectangle = length × breadth
Area of a parallelogram = base × height
Area of a triangle =1/2 × base × height
In the other half of the chapter, circles are explained. The topic is explained in two parts:
Answer:
Perimeter = 2 (l+b)
81 = 2 (21+b)
81 = 42+2b
81-42 = 2b
39/2 = b
19.5 = b
Step-by-step explanation:
19.5 m = breadth