A window pane is 120 cm long and 80 cm wide, so it covers 9600 cm². Written in square metres, how large is that pane? (1 m² = 10,000 cm².)

Question

Accepted Answer

0.96 m². Square units convert in steps of 10,000, because 1 m² = 100 cm × 100 cm = 10,000 cm². So 9600 cm² = 9600 ÷ 10,000 = 0.96 m². Dividing by 100 instead — the rule that works for LENGTHS — gives the wrong answer 96 m². The pane is smaller than one square metre, so the answer must be less than 1.

A window pane is 120 cm long and 80 cm wide, so it covers $9600 cm^{2}$ . Written in square metres, how large is that pane? $(1 m^{2} = 10, 000 cm^{2} .)$

Step-by-Step Solution

Key idea: Area — the surface inside

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More Class 6 Mensuration practice

A window pane is 120 cm long and 80 cm wide, so it covers 9600cm2. Written in square metres, how large is that pane? (1m2=10,000cm2.)

Step-by-Step Solution

Key idea: Area — the surface inside

Master this chapter in 30 minutes a day.

More Class 6 Mensuration practice

A window pane is 120 cm long and 80 cm wide, so it covers $9600 cm^{2}$ . Written in square metres, how large is that pane? $(1 m^{2} = 10, 000 cm^{2} .)$