Given:
Speed limit on a highway is 110 km per hour.
Let x be the speed of the car in time 't'
time when taken for a car to travel 132km.
It takes minimum 1 hour 12 minutes
HELP!!!! 2x+y= 20 3x+4y= 40
1 answer:
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using the formula above for finding area of trapezoids
a= 20in.
b=29.2in.
h= height= 12.5in.
(a+b)=20+29.2=49.2in.
(a+b)h= (49.2)12.5= 49.2×12.5=615in.
1/2(a+b)h= 1/2 × 615 in.= 615/2= 307.5in.
therefore the area of the trapezoid is 307.5in.