Question

[Dung Phạm]

A square and a triangle have equal perimeters. The lengths of three sides of the triangle are 6.2cm, 8.3cm and 9.5cm. The area of the square is...

Answer 1

[Hoàng Vũ Ánh Dương]

36

Answer 2

[Song Thư]

Perimeters of a triangle is: 6.2+8.3+9.5=24cm

But a square and a triangle have equal perimeters

⇒Perimeters of a square is 24cm

So: the side of a square=\(\dfrac{24}{4}\)=6

Other way: the area of a square=a.a

⇔S_square=6*6=36 (cm²)