please let me know the answer
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(i)133.5 cm2
(ii)53400cm3
Step-by-step explanation:
(i) Bisect the cross-section into trapezium and rectangle
(16+10)(12-7.5)/2 + 10(7.5)
= 133.5 cm2
(ii) volume
= 133.5 x 4x100 cm3
= 53400cm3
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