Subject :IMO Class : Class 8
The diagonal of a square is 'a' units. Then the area of the square is ______ square units.
A
B
C
D
Ans 1:
Class : Class 8
Answer is C. a^2 ÷ 2
Because diagonals of a square are equal. And area of rhombus formula can be used here because both have all sides equal.
Area of rhombus= 1/2(diagonal 1 × diagonal 2)
Because diagonals are equal, we write it as :
a × a÷ 2
=a^2 ÷2