TRY THESE - NCERT
Path is 1 m wide, so the rectangular area not cemented is (30 – 2) × (20 – 2) m 2. That is 28 × 18 m 2. Hence number of cement bags used = -----(iv) There are two rectangular flower beds of size 1.5 m × 2 m each in the park as shown in the diagram (Fig 11.1) and the rest has grass on it. Find the area covered by grass. Mensuration
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