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marisolrojo2002
23.09.2019 •
Mathematics
The cross section of a metal ingot is a trapezoid. the cross section has an area of 39 square centimeters. the top base of the cross section is 12 centimeters. the length of the bottom base is 2 centimeters greater than the top base. how tall is the metal ingot?
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Ответ:
The answer is below
Step-by-step explanation:
At Lidal shop, 4 toilet rolls is sold for £2.40. Therefore the cost of each toilet roll is given as:
Cost of each roll at Lidal = £2.40 / 4 = £0.60 per roll
Cost of 36 rolls = cost for each roll * 36 rolls = £0.60 per roll * 36 rolls = £21.6
At Oldi shop, 9 toilet rolls is sold for £4.68. Therefore the cost of each toilet roll is given as:
Cost of each roll at Oldi = £4.68 / 9 = £0.52 per roll
Cost of 36 rolls = cost for each roll * 36 rolls = £0.52 per roll * 36 rolls = £18.72