Which of the following CANNOT be the length of BC required to construct the triangle ABC such that AC = 7.4 cm and AB = 5 cm?

3.5 cm

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2.1 cm

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4.7 cm

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All of the above can be the length of BC.

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Solution

The correct option is B
2.1 cm

The sum of two sides of a triangle must be greater than the third side.

The side length 2.1 cm does not satisfy this condition with AC = 7.4 cm and AB = 5 cm.

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Which of the following CANNOT be the length of BC required to construct the triangle ABC such that AC = 7.4 cm and AB = 5 cm?

The correct option is B 2.1 cm The sum of two sides of a triangle must be greater than the third side. The side length 2.1 cm does not satisfy this condition with AC = 7.4 cm and AB = 5 cm.

The correct option is B
2.1 cm

The sum of two sides of a triangle must be greater than the third side.

The side length 2.1 cm does not satisfy this condition with AC = 7.4 cm and AB = 5 cm.