Calculate the area of trapezium cdef. show the working out

24cm²

Step-by-step explanation: From the given sides, we would try to find the unknown sides.

If abcf is a rectangle, then ba = fc and fa = cb

Which implies that:

ba = fc = 6cm

If Perimeter of abcf = 20cm

And fa = bc;

Then fa = cb = [ 20 - (ba + fc) ] / 2

= (20 - (6 + 6) ] / 2

= (20 - 12) / 2

= 8/2 = 4cm

If cb = 4cm and bd = 9cm;

Then dc = 9 - 4 = 5cm

Height of trapezium is equal to ba = fc (alternatively you can get it by measuring out 3cm from point C towards D, then draw a perpendicular line to point E) = 6cm

Parallel sides of trapezium are dc = 5cm and fe = 3cm

Area of trapezium is given by half sum of parallel side multiplied by height = (5 + 3)/2 x 6

Area = (8/2) x 6 = 4 x 6 = 24cm²

Area of trapezium is 24cm²

c 1 hour

step-by-step explanation:

m = 2e

m = 2 so 2 = 2e

1 = e

square root of 36/6 = 2.449489743

square root of 16/6 = 1.632993162

square root of 6 = 2.449489743

the answer is square root of 16/6 because the square root of 36/6 is the same answer as square root of 6 = 2.449489743