Question

The difference of the parallel sides of a trapezoidal field is 20 m. Its area is 450 m and its altitude is 15 m.
Find the length of the parallel sides.
8. The lengths of the parallel sides are in the ratio 7:9. Its area is 960 cm and the distance between the parallel
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Answer 1

Answer:

Let one parallel side be 'x', then the other will be 'x +20'.

Area 1/2 × Altitude × sum of parallel sides

$450 = 1/2×15 (x+x+20)$

$450 = 15/2 (2x+20)$

$450 = (15/2)×2(x+10)$

$x+ 10 = 450/15 = 30$

$x = 30 - 10 = 20$

$x+20 = 20 +20 = 440$

So the parallel sides are 20m and 40m.

Answer 2

Answer:

Sorry don't know the answer !!!!