The two sides of an isosceles triangle are 8 cm long and 16 cm long respectively. What is the circumference of this tower?

Solution: It is known that the two sides of an isosceles triangle are 8 cm and 16 cm respectively.

While the circumference of an isosceles triangle = waist length ×2+ base length,

When the waist length is 8 cm and the bottom length is 16 cm,

Sum of two sides =8+8= 16 cm = third side,

This isosceles triangle does not exist.

When the waist length = 16 cm and the bottom length =8 cm,

Circumference of isosceles triangle

= waist length ×2+ base length

= 16×2+8

=32+8

=40 cm

Its circumference is 40 cm.