Question

12. Find the area of a square, if the measure of its each diagonal is 12 cm.
3.
3. The length and breadth of a rectangle are 16 cm and 4 cm respectively. A squ
came area as the rectangle. Find:​

Answer 1

Answer:

12.

Area of a square with diagonal

diagonal of square=

2

a

length =d is

Area =

2

d

2

d=12 cm

⇒ Area =

2

(12)

2

=

2

144

⇒ Area =72 cm

2

Answer 2

Answer:

12.  72

3.

Step-by-step explanation:

Using the formulas

A=root 2a

d=2a

Solving for A

A=d*d/2=12*12/2=72