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secondary 2 | Maths
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Joann
Anonymous

secondary 2 chevron_right Maths chevron_right Singapore

Hi I need help with question 9c. Thanks

Date Posted: 1 year ago
Views: 62
J
J
1 year ago
Notice that both triangles have the same vertical height. You can calculate area of one triangle first. Subtract it from the total.

Then find the length if AB using formula for area of triangle.


Otherwise, just use the formula of area of trapezium.


Area of trapezium = ½(a+b)(h)

a , b are lengths of each of the parallel sides.

h is the height.
Joann
Joann
1 year ago
Oh yah,I don't know how I didn't think of that, thanks!

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Daniel
Daniel's answer
35 answers (Tutor Details)
1st
Ok?
Joann
Joann
1 year ago
Yup, thanks for your help :D