A plan of a compound is drawn on a scale of 1cm to 5cm . A. If a wall is 24cm long, find its length on the drawing. B. If the scale drawing of a round house is a circle of diameter 0.7cm,find the actual diameter of the round house?.
2 Answers
Is everything meant to be in centimetres. That's a very small house and wall! Did you mean 1 centimetre to 5 metres?
Part A: Wall length on the drawing is 5 cm
Part B: The actual diameter of the round house is 3.5 cm ???????
Explanation:
Using ratio in fraction FORMAT (this is not a fraction of the whole)
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Given: The actual wall is 25 cm long
Let the unknown drawing length be
Multiply both sides by
But
Wall length on the drawing is 5 cm
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For convenience turn every thing upside down so that the
Multiply both sides by
The actual diameter of the round house is 3.5 cm ???????
Length of wall in drawing plan is
actual diameter of round house is
Explanation:
Drawing scale :
Length of wall in drawing plan is
Round house diameter in the plan of drawing is
then , actual round house diameter is
Length of wall in drawing plan is
of round house is
Remarks: Too small round house and wall , It may be a replica.