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Mathematics 14 Online
OpenStudy (ewienfe):

Help me please and fast Medal + Fan

OpenStudy (ewienfe):

OpenStudy (sachintha):

ewiefe what shapes do you get if you break it down?

OpenStudy (ewienfe):

I think a trapezoid

OpenStudy (sachintha):

Is that all?

OpenStudy (ewienfe):

a rectangle?

OpenStudy (sachintha):

Yep. Two trapezoid and four rectangles which two differ in sizes.

OpenStudy (sachintha):

Area of trapezoid = \(\frac{1}{2}(a+b)h\) So what do you get for it?

OpenStudy (ewienfe):

well... 1/2(17+19)h idk the h

OpenStudy (sachintha):

|dw:1466407972726:dw|

OpenStudy (sachintha):

Remember \(a\) and \(b \) are two parallel sides and \(h\) is the perpendicular height.

OpenStudy (ewienfe):

we don't know the h

OpenStudy (ewienfe):

it's not written anywhere

OpenStudy (sachintha):

Perpendicular height is given in the other trapezoid. Perpendicular height is shown in the figure as I have shown it in the drawing.

OpenStudy (ewienfe):

15?

OpenStudy (sachintha):

Yeah

OpenStudy (sachintha):

What is a and b?

OpenStudy (ewienfe):

17 and 19?

OpenStudy (sachintha):

|dw:1466408365624:dw|

OpenStudy (sachintha):

|dw:1466408573797:dw|

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