Raman a painter, always donated one-fifth of his income to an orphanage. Once he got a contract of painting a house having three room of dimensions 10m×12m×3.5m,8m×6m×3.5m and 7m×5m×3.5 . He charged Rs30 per m sq.for his work. (a) How much money did Ram earn? (b) Find the amount of money he gave to orphanage .
Answers
Your answer is in the attachment above...
*Assuming he painted the 4 walls and the ceiling of each room
Find the area of room 1:
Dimension = 10m × 12m × 3.5m
Area of the ceiling = 10 x 12 = 120 m²
Area of the 4 walls = 2(10 + 12) x 3.5 = 154 m²
Total area of the room = 120 + 154 = 274 m²
Find the area of room 2:
Dimension = 8m × 6m × 3.5m
Area of the ceiling = 8 x 6 = 48 m²
Area of the 4 walls = 2(8 + 6) x 3.5 = 98 m²
Total area of the room = 48 + 98 = 146 m²
Find the area of room 3:
Dimension = 7m × 5m × 3.5
Area of the ceiling = 7 x 5 = 35 m²
Area of the 4 walls = 2(7 + 5) x 3.5 = 84 m²
Total area of the room = 35 + 84 = 119 m²
Find the total area:
Total area = 274 + 146 + 119 = 539 m²
(a) Find the money earned:
1 m² = Rs 30
539 m² = 30 x 539 = Rs 16170
(b) Find the amount of money given to the orphanage:
Money given = 1/5 x 16170 = Rs 3234
Answer: (a) Rs 16170 (b) Rs 3234