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How do you calculate perpendicular height of trapezium?
C. ABCD is a trapezium of perpendicular height 1.7 cm
AB = 3.1 cm
DC = 5.6 cm
Calculate the area of ABCD?
D. Last year Mary brought some euro for a holiday in cork. She exchanged £200 for euro at a rate of £1 = euro 1.43
How many euro should she received?
E. She was unable to go to cork. later she travelled to Donegal where she bought a dress for euro 135
The rate of exchange was then £1 = euro 1.36
How much, to the nearest penny, did she save on the dress by using the euro she has already purchased.?
1 Answer
- 7 years agoFavorite Answer
Area of trapezium= half the sum of the parrallel lines* distance between them
the distance between them is the prerpendicular height so you can work backwards from the area
C. area= 0.5*(3.1+5.6)*1.7= 7.395 cm^2
D. 200*1.43=286 euro
E.at old exchange 135 euro= 135/1.43= 94.41 pounds
at new exchange 135 euro= 135/1.36=99.26 pounds
99.26-94.41= 4.85 pounds
she saved 4.85 pounds
