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• Multiply the lengths of all three sides.

• Add the lengths of all three sides.

• Multiply the length of one side by 3.

• Add the lengths of two sides and subtract the third.

What is the perimeter of a triangle with sides measuring 3 cm, 4 cm, and 3.5 cm?

• 10 cm

• 10.5 cm

• 11 cm

• 11.5 cm

A triangle has all three sides measuring 3.2 cm. What is its perimeter?

• 6.4 cm

• 9.2 cm

• 9.6 cm

• 10.2 cm

คุณสนุกกับการเรียนวิดีโอนี้หรือไม่?

• ใช่

• ไม่ใช่

What is the perimeter of an equilateral triangle with each side measuring 3.2 cm?

• 6.4 cm

• 9.6 cm

• 12.8 cm

• 10.2 cm

An isosceles triangle has two sides of 3 cm each and a third side of 5.3 cm. What is its perimeter?

• 8.3 cm

• 11.3 cm

• 10.6 cm

• 13.6 cm

Triangle XYZ has a perimeter of 16 cm. If sides XY and YZ measure 5 cm and 3 cm respectively, what is the length of side XZ?

• 7 cm

• 8 cm

• 9 cm

• 10 cm