the area of four walls of a room is 168 m square the breadth and the height of the room are 10M and 4m respectively find the length of the room
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Let the length be 'x' m.
Area of four walls = 168 m
2( l + b ) × h = 168 m
2 ( x + 10 ) × 4 = 168
2x + 20 = 168 ÷ 4
2x + 20 = 42
2x = 42- 20
2x = 22
x = 22 ÷ 2 = 11 m
therefore the length of room = x = 11 m.
Hope this helps you.
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Area of four walls = 168 m
2( l + b ) × h = 168 m
2 ( x + 10 ) × 4 = 168
2x + 20 = 168 ÷ 4
2x + 20 = 42
2x = 42- 20
2x = 22
x = 22 ÷ 2 = 11 m
therefore the length of room = x = 11 m.
Hope this helps you.
Please mark it as brainliest
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