RBSE Solutions for Class 6 Maths Chapter 10 Mensuration Ex 10.2

Rajasthan Board RBSE Solutions for Class 6 Maths Chapter 10 Mensuration Ex 10.2 Textbook Exercise Questions and Answers.

RBSE Class 6 Maths Solutions Chapter 10 Mensuration Ex 10.2

Question 1.
Find the areas of the following figures by counting square :


Answer:
(a) Number of complete squares = 9
Area covered by complete squares = 9 × 1 sq. unit
= 9 sq. unit.

(b) Number of complete squares = 5 
∴ Area covered by complete squares
= 5 × 1 sq. unit = 5 sq. unit.

(c) Number of complete squares = 2
Number of exact half squares = 4
Total area = 2 + \(\frac{1}{2}\) × 4 = 2 + 2 = 4sq. unit.

(d) Number of complete squares = 8
∴ Area covered by complete squares
= 8 × 1 = 8 sq. unit.

(e) Number of complete squares = 10
∴ Area covered by complete squares
= 10 × 1 sq. unit = 10 sq. unit.

(f) Number of complete squares = 2
Number of exact half squares = 4
∴ Area covered by the figure
= 2 + \(\frac{1}{2}\) × 4 = 2 + 2 = 4 sq. unit.

(g) Number of complete squares = 4
Number of exact half squares = 4
∴ Area covered by the figure = 4 + 4 × \(\frac{1}{2}\)
= 4 + 2 sq. unit = 6 sq. unit.

(h) Number of complete squares = 5 
∴ Area covered by the figure
= 5 × 1 sq. unit = 5 sq. unit.

(i) Number of complete squares = 9
∴ Area covered by the figure
= 9 × 1 sq. unit = 9 sq. unit.

(j) Number of complete squares = 2
Number of exact half squares = 4
∴ Area covered by the figure = 2 + \(\frac{1}{2}\) × 4
= 2 + 2 = 4 sq. unit.

(k) Number of complete squares = 4
Number of exact half squares = 2
∴ Area covered by the figures =4 + \(\frac{1}{2}\) × 2
= 4 + 1 = 5 sq. unit.

(l) Number of complete squares = 4
∴ Area covered by full squares
= 4 × 1 = 4 sq. unit.

Number of exact half squares = 2
Area covered by exact half squares
= 2 × \(\frac{1}{2}\) = 1 sq. unit.

Number of more than half filled squares = 3
∴ Area covered by more than half filled squares = 3 × 1 = 3 sq. unit
Total area = (4 + 1 + 3) sq. unit = 8 sq. unit.

(m) Number of completely filled squares = 6
Number of more than half filled squares = 8
Area covered by completely filled squares
= 6 × 1 = 6 sq. unit

Area covered by more than half filled squares = 8 × 1 = 8 sq. unit
Total area = 6 + 8 = 14 sq. unit.

(n) Number of completely filled squares = 9
Area covered by completely filled squares
= 9 × 1 = 9 sq. unit

Number of exact half filled square = 0
Number of more than half filled squares = 9
Area covered by more than half filled squares = 9 × 1 = 9 sq. unit
area = 9 + 9 = 18 sq. unit.