the perimeter of the trapezium is 72 cm and its non parallel sides are 12 cm each if its height is 16 cm,find its area
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Answered by
12
perimeter = Sum of all side
x = sum of parallel sides=a+b
72= 12+12+x
72=24+x
x=48
area = 1/2(a+b)*H
= 1/2 * 48 * 16
48*8
area=384cm²
x = sum of parallel sides=a+b
72= 12+12+x
72=24+x
x=48
area = 1/2(a+b)*H
= 1/2 * 48 * 16
48*8
area=384cm²
Answered by
0
Answer:
Step-by-step explanation:Area of cross section of river= 2 x 45 = 90 m²
so, water flowing into the sea= area of cross section x rate of flowing water
= 90 x 3000
= 270000 m³
there water flowing per minute= 270000 / 60 = 4500 m³
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