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You are recreating a scale drawing at a different scale. The original scale is 1 cm : 8 m. The new scale is 1 cm : 2 m. In the original drawing, the length of a segment is 9 centimeters. How long should the segment representing the same distance be in the new drawing?

The segment should be ?centimeters long.

User Ncuesta
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1 Answer

3 votes

Answer:

The segment should be 36 centimeters long

Explanation:

Let us use the ratio method to solve the question

The original scale is 1 cm : 8 m

∵ In the original drawing, the length of a segment is 9 centimeters

→ By using the ratio method

→ cm : m

→ 1 : 8

→ 9 : x

→ By using the cross multiplication

1 × x = 9 × 8

x = 72 m

The actual length of the segment is 72 m

The new scale is 1 cm : 2 m

∵ The actual length of the segment is 72 m

→ By using the ratio method

→ cm : m

→ 1 : 2

→ y : 72

→ By using the cross multiplication

y × 2 = 1 × 72

∴ 2y = 72

→ Divide both sides by 2 to find y

y = 36

∴ The drawing length of the segment is 36 cm in the new scale

The segment should be 36 centimeters long

User PinkFloyd
by
6.7k points