Question

1. A big square is made up of 4 identical small squares.
The area of each small square is 25 cm².
(a) Find the length of each side of the big square.
(b) What is the perimeter of the big square?
?​

Answer 1

Answer:

10cm and 40cm

Step-by-step explanation:

Small square area = 25cm²

Area of big square = 25×4 = 100cm²

Area of square = a² = 100

side of the square = a = 10 cm

Perimeter = 10+10+10+10 = 40 cm

Answer 2

Answer:

10cm and 40cm

Step-by-step explanation:

Small square area = 25cm²

Area of big square = 25×4 = 100cm²

Area of square = a² = 100

side of the square = a = 10 cm

Perimeter = 10+10+10+10 = 40 cm