Greg measures the length of the roof extension on the plan to be 2 cm, how long will it be in real life?
A) 400mB) 4mC) 20mD) 5m
Answers
Correct Question:
A scale on a plan shows 1:200. Greg measures the length of the roof extension on the plan to be 2 cm, how long will it be in real life?
Given,
A scale on a plan shows 1:200 and the roof extension in the plan as 2 cm.
To Find,
The actual length of the roof.
Solution,
As per the plan,
1 cm = 200 m
Greg sees that the roof extension in the plan as 2 cm.
Therefore, the actual length of the roof when it will be constructed = 2 x 200 = 400 m.
Therefore, the appropriate option for the question is Option A) 400 m.
✔ Scales are an important aspect of maps and all measurements are taken into consideration with the scale.
✔ The scale a plan represents a ratio between the actual length and the length the plan is expressing.
✔ Using scales helps us to make simple drawings of houses, buildings etc.. It makes it simple to analyse the construction.
✔ All maps and plans must have a scale. Only sketched do not require scales.
Answer:
4m
Step-by-step explanation:
First multiply by the scale factor: 2 cm × 200 = 400 cm
Then convert to metres by dividing by 100:- 400 ÷ 100 = 4 m