Question

Three equilateral triangles, each with side length 6cm, are put together to make one larger shape.
Jemma says that the perimeter of the larger shale Will be three times the perimeter of one of the triangles
Explain why Jemma is wrong ​

Answer 1

Jemma is wrong.

As the given side of equilateral triangle is 6 cm, then its perimeter will be 18 cm.

And the perimeter of the constructed shape will be 30 cm, in any of the cases.

Since 18×3 ≠ 30,

Jemma is wrong.

Hence, Proved