Geometry | Term 1 Chapter 1 | 4th Maths
Chapter: 4th Maths : Term 1 Unit 1 : Geometry
Exercise 1.1d (sides and perimeter of a quadrilateral)
Find the perimeter of the following figures : square, rectangle, triangle, parallelogram, trapezoid
Solutions for Figures
1)
Perimeter = Sum of all sides = \(5 + 3 + 6 + 8 = 22 \text{ cm}\)
Perimeter = 22 cm
2)
Perimeter = Sum of all sides = \(7 + 2 + 5 + 10 = 24 \text{ cm}\)
Perimeter = 24 cm
3)
Perimeter = Sum of all sides = \(4 + 7 + 4 + 7 = 22 \text{ cm}\)
Perimeter = 22 cm
4)
Perimeter = Sum of all sides = \(11 + 11 + 11 + 11 = 44 \text{ cm}\)
Perimeter = 44 cm
5)
Perimeter = Sum of all sides = \(5 + 5 + 10 + 10 = 30 \text{ cm}\)
Perimeter = 30cm
Answer the following Questions
1. A side of a square−shaped sandbox in Gandhi Park measures 30 cm. Determine the perimeter of the sandbox.
Side of a square shaped sand box = 30cm
Perimeter = Sum of all sides
\( = 30 + 30 + 30 + 30 = 120 \text{ cm}\)
Perimeter of the sand box = 120 cm
2. Find the perimeter of a rectangle, whose sides are 12 cm and 8 cm.
Side of a Rectangle = 12cm and 8cm
Perimeter = Sum of all sides
\( = 12 + 12 + 8 + 8 = 40 \text{ cm}\)
Perimeter of the Rectangle = 40 cm
3. Find the perimeter of the triangle, whose sides are 13 cm, 5 cm and 14 cm.
Side of a Triangle = 13cm, 5cm and 14cm
Perimeter = Sum of all sides
\( = 13 + 5 + 14 = 32 \text{ cm}\)
Perimeter of the Triangle= 32 cm
4. The adjacent sides of a parallelogram are 6 cm and 7 cm. What is the perimeter of the parallelogram?
Side of a Parallelogram = 6cm and 7cm
Perimeter = Sum of all sides
\( = 6 + 6 + 7 + 7 = 26 \text{ cm}\)
Perimeter of the Parallelogram = 26 cm
5. The sides of a trapezoid measures 8 cm, 7 cm, 4 cm and 5 cm respectively. What is the perimeter of the trapezoid?
Side of a Trapezoid = 8cm, 7cm, 4cm and 5cm
Perimeter = Sum of all sides
\( = 8 + 7 + 4 + 5 = 24 \text{ cm}\)
Perimeter of the Trapezoid = 24 cm