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21. A room is 11 m long and 9 m wide. What is the cost of carpeting the floor at the rate ofRs. 110 per square meter? (2 Marks) |
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Answer» R.s -- 16380Step-by-step EXPLANATION:LENGTH of the ROOM = 13 mBreadth of the room = 9 mArea of the room = L × b = 13 × 9 = 117 sq mLet the length of the carpet required = 'l' mWidth of the carpet = 75 cm = 0.75 mArea of the carpet = Area of the room⇒ l × 0.75 = 117⇒ l = 117 / 0.75⇒ l = 156 mLength of the carpet required = 156 mCost of the carpet per metre = Rs 105Total COST of the carpet = 156 × 105 = Rs 16380 |
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