Samacheer Kalvi 7th Maths Solutions Term 1 Chapter 2 Measurements Additional Questions

Samacheer Kalvi 7th Maths Solutions Term 1 Chapter 2 Measurements Additional Questions

Tamilnadu Samacheer Kalvi 7th Maths Solutions Term 1 Chapter 2 Measurements Additional Questions

Additional Questions and Answers

Exercise 2.1

Question 1.
In the following figure, PQRS is a parallelogram find x and y.

Question 3.
The floor of a building consists of 2000 titles which are rhombus shaped and each of its diagonals are 40 cm and 25 cm. Find the total cost of polishing the floor, if the cost per m² = ₹ 5.
Solution:
Area of each title = 1/2 × d₁ × d₂ sq. units
= 1/2 × 40 × 25 cm² = 500 cm²
∴ Area of 2000 titles = 500 × 20,000 = 10,000 cm² = 100 m²
Cost of polishing 1 m² = ₹ 5
∴ Cost of polishing 100 m² = 5 × 100 = ₹ 500