CY Lew's answer to Amanda's Secondary 2 Maths Singapore question.
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Hi Amanda,
Part (a) can use reverse calculation to applying h=8cm to determine the total surface area. If it matches the given 960 sq cm, then h=8cm.
Part (b) means the same volume of original solid = volume of 5 hemispheres.
Happy learning. CY...
Part (a) can use reverse calculation to applying h=8cm to determine the total surface area. If it matches the given 960 sq cm, then h=8cm.
Part (b) means the same volume of original solid = volume of 5 hemispheres.
Happy learning. CY...
Date Posted:
1 year ago
Thank you!