Question

A room is 8.5m long ,6.5 m broad ​

Answer 1

Hope it helps

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Answer 2

COMPLETE QUESTION

A room is 8.5 m long 6.5 m broad and 3.4 m high it has two doors each measuring 1.5 my by 1m and two windows each measuring 2m by 1m .find the cost of painting its four walls at rupees 160 per metre square

SOLUTION

Step-by-step explanation:

ROOM DIMENSIONS

• Length of room = 8.5 m
• Breadth of room = 6.5 m
• Height of room = 3.4 m

• Surface area of four walls = 2 (Length + breadth)×Height
• Surface area of four walls = 2 (8.5 + 6.5)×3.4 = 102 m²

DOOR DIMENSIONS

• Length of door = 1.5 m
• Breadth of door = 1 m

• Area of each door = Length × breadth
• Area of each door = 1.5 × 1 = 1.5 m²
• Area of both door = 1.5 × 2 = 3.0 m²

WINDOWS DIMENSION

• Length of window = 2.0 m
• Breadth of window = 1 m

• Area of each window = Length × breadth
• Area of each window = 2.0 × 1 = 2.0 m²
• Area of both window = 2.0 × 2 = 4.0 m²

TOTAL AREA

• Total area of wall=Area of four walls-Area of door -Area of window
• Total area of wall = 102 - 3.0 - 4.0 = 95 m²

COST OF PAINTING

• Cost = Price rate× Area
• Cost = 160× 95
• Cost = Rs. 15200