There are 100 pieces of string in my pocket. Each one is between 10 and 20 cm long. If I pull out 30 at random and lay them end to end, what is the probability that the resulting length of string would be more than 480 cm long?
Answers
Answer:
Hence, length of each side if the string is used to form a regular hexagon will be 5 cm.
Step-by-step explanation:
The string length is the perimeter of the shape.
∴ For each case, perimeter=30cm
(i) Square
A square has all the side equal.
Perimeter=4×(side of square)
∴side of square=
4
perimeter
=
4
30
=7.5cm
Hence, length of each side if the string is used to form a square will be 7.5 cm.
(ii) Equilateral triangle
An equilateral triangle has three equal sides.
Perimeter=3×(side)
∴side=
3
perimeter
=
3
30
=10cm
Hence, length of each side if the string is used to form an equilateral triangle will be 10 cm.
(iii) Regular hexagon
A regular hexagon has six equal sides.
Perimeter=6×(side)
∴side=
6
perimeter
=
6
30
=5cm