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secondary 3 | E Maths
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secondary 3 chevron_right E Maths chevron_right Singapore

please help me with (b) , ty

Date Posted: 5 years ago
Views: 275
J
J
5 years ago
AR is common for the bottom two rectangles.

6ay = 3a(2y)
2by = b(2y)

AR = 2y


DP is common for the left two rectangles. Factorise like as shown above to get your answer.

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Chua Sabrina
Chua Sabrina's answer
2 answers (Tutor Details)
1st
Rectangle ADPQ shares the same length (DP, RT, AQ) but different height (AR, DR). Hence, you factorise the area of ADPQ and find the length and the 2 different heights of the respective rectangles DPTR and RTAQ.