Grade 9 : please have been solving this two questions but my answers are not corresponding with the answers at the back of my text book ,for Q. (4)it says 432 and the answers of Q. (5) 187 ...the topic is Area of plane shape (area in the home and work place) An open rectangular box, 1 m long, 70 cmwide and 50 cm deep, is painted on the insideand outside. Find the cost at N90 per m2.© How many paving stones, each 1 m longand 80 cm wide, are needed to cover acompound 13.6 m long and 11 m wide?

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Answered: An open rectangular box, 1 m long, 70…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Grade 9 : please have been solving this two questions but my answers are not corresponding with the answers at the back of my text book ,for Q. (4)it says 432 and the answers of Q. (5) 187 ...the topic is Area of plane shape (area in the home and work place)

An open rectangular box, 1 m long, 70 cm
wide and 50 cm deep, is painted on the inside
and outside. Find the cost at N90 per m2.
© How many paving stones, each 1 m long
and 80 cm wide, are needed to cover a
compound 13.6 m long and 11 m wide?

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