Question

The area of a trapezium is 78 cm square if the two parallel sides are 12cm and 8 cm find the height of a trapezium

Answer 1

Step-by-step explanation:

let height be h

since area of trapezium = h(a+b)/2

given area = 78

78=12+8*h/2

78=10h

h=7.8

there height is 7.8 cm

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