Constance (tutor)'s answer to Issabelle's Year8 Maths Malaysia question.

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Constance (tutor)
Constance (tutor)'s answer
76 answers (A Helpful Person)
Question 9
Issabelle
Issabelle
6 years ago
question 9a why must it be 10 to the power of 3?
Constance (tutor)
Constance (tutor)
6 years ago
1 km = 1000 cm = 1 * 10^3 cm

We will need to make the units the same before further calculation.
Constance (tutor)
Constance (tutor)
6 years ago
(25000)^2 = 6.25 * 10^8
Issabelle
Issabelle
6 years ago
9b they want the. answer to be in km
Constance (tutor)
Constance (tutor)
6 years ago
Oops my bad. Sorry missed that section.

2.5* 10^10 cm = 25 000 km^2

1cm^2 = (1000)^2 km^2 = 1.0*10^6 km^2