Q:
If the length of the diagonal of a square is 20cm,then its perimeter must be
a. cm b. cm c. 10cm d. 15cm
Answer & Explanation
Answer: A) a
Explanation: We know that d=√2s
Given diagonal = 20 cm
=> s = 20/ cm
Therefore, perimeter of the square is 4s = 4 x 20/ = 40 cm.
View Answer
Report Error
Discuss