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Mathematics for IGCSE & O level - Mensuration (Section 6 - No. 13)

A rectangle has a perimeter of 28cm. Its length is 8cm. What is the width?
2 cm
4 cm
6 cm
10 cm

Wyjaśnienie

Perimeter = 2(l+w) => 28= 2(8+w) => 14 = 8 + w => w = 6

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