Pierakstīties
Mathematics for IGCSE & O level - Mensuration (Section 5 - No. 18)
The perimeter of a rectangle is 30cm and its length is 9cm. What is its width?
3 cm
6 cm
12 cm
21 cm
Paskaidrojums
30=2(9+w) => 15=9+w => w = 6
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