The diagram shows a shape made from a trapezium ABCD and a semicircle with diameter DC. DC = 8 cm
The shape has area 64 cm^2
The height of the trapezium is 5 cm.

Work out the length of AB.
Give your answer correct to 1 decimal place.

y=x+2 hope this jdjxhdnzbdjdo

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2

so the rectangle is 80cm (area)

now to find the area of a triangle.

base times height.

4 times 8.

your answer is 96cm.

hope this .