Question

A square has a diagonal that is 42 cm long. What is the area of the square?

If necessary, round your answer to the nearest whole number.

Answer 1

A=a^2

d= square root of 2 A

Solving for A

A=1

2d2=1

2·422=882cm²

A = 882cm^2

Answer 2

b is your answer

Explanation: