A wooden bookshelf has external dimensions as follows: Height =110

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Click here👆to get an answer to your question ✍️ A wooden bookshelf has external dimensions as follows- Height -110 cm- Depth - 25 cm- Breadth - 85 cm- The thickness of the plank is 5 cm everywhere- The external faces are to be polished and the inner faces are to be painted- If the rate of polishing is 20 paise per -cm-2- and the rate of painting is 10 paise per -cm-2- Find the total expenses required polishing and painting the surface of the bookshelfRs 6275Rs 4340Rs 2525Rs 1935
External length -l- of bookshelf-85-x339D-External breadth -b- of bookshelf-25-x339D-External height -h- of bookshelf-110-x339D-External surface area of book shelf while leaving out the front face of the shelf-lh-2-lb-bh-85-xD7-110-2-85-xD7-25-25-xD7-110-9350-9750-19100-x33A0-Area if front face-85-xD7-110-x2212-75-xD7-100-2-75-xD7-5-1850-760-2600-x33A0-Area to be polished-19100-2600-21700-x33A0-Cost of polishing-Rs- 21700-xD7-0-20-Rs-4340Length- breadth and height of each row of bookshelf are 75-x339D-20-x339D- -amp- 30-x339D- respectively- From the figure Area to be painted in 1 row-2-l-h-b-lh-2-75-30-20-75-xD7-30-6450-x33A0-Area to be painted in 3 rows-3-xD7-6450-19350-x33A0-Total cost of painting-Rs-19350-xD7-0-1-Rs- 1935Total expenses-Rs-4340-1935-Rs- 6275

A wooden bookshelf has external dimensions as follows: Height =110

EXERCISE 13.9 (Optional)* 1. A wooden bookshelf has external

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1. A wooden bookshelf has external dimensions as follows: Height

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a wooden bookshelf has external dimensions as follows height=110cm

A wooden bookshelf has external dimensions as follows:Height

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