Question

A piece of wood 2m and 30 cm long is marked off into 0.1 m lengths. How many 0.1 m lengths are there?

Answer 1

Area of big square.

A =200+30=230cm

Area =a^2

=230×230

Area of small square

A=0.1m=100cm

Area=a^2

=100×100

No.of mark = 230×230/10000

= 52900/10000

=5.29

Mark's