charis' scribepost for dec. 8, 2009

1. which number is a perfect square ?

a) 10
B) 20
C)50
D) 100

answer: D , 100.

2. what is the side length of the square in the diagram ?








A) 6 mm
B) 9 mm
C) 12 mm
D) 18 mm

Answer : B, 9 mm

3. A square has a side length of 7 cm. what is the area of the square ?

A) 14 cm2
B) 21 cm2
C) 28 cm2
D) 49 cm2

Answer : D, 49 cm2