17. Caramel wants to mount an 18cm x 18 cm square picture on a square board that is four times the area of a picture.

a) What is the area of the picture?

18cm x 18cm = 324cm

^{2}

b) What is the area of the board?

324 x 4= 1296cm

^{2}

c) What are the dimensions of the board?

12. While shopping online, Ji Hun finds a square rug with an area of 11m

^{2 . }He needs to know if it will fit in his 4m x 5m bedroom.

a) Estimate the side length of the rug, to one decimal place.

b) Check your estimate with a calculator.

√11= 3.3m

c) Will the rug fit? Explain.

Yes, it will fit because the side length of the rug is smaller, even than the shorter side of the bedroom.

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