AC Lim's answer to Tyler soliven's Primary 6 Maths Measurement Singapore question.
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Given big square = 1764
1 small square =1764÷9
=196
Therefore diameter for small circle √196=14.
a)Radius =14÷2=7cm.
b) Area for 1 small circle = πr²
= 22/7 × 7²
=154
Area for 1 small shaded part in 1 small square = (196-154)÷4
=10.5
Total have 16 small shaded part = 16×10.5=168
Total shaded part for figure= 1 circle + 168
= 154+168
= 322 cm ²
1 small square =1764÷9
=196
Therefore diameter for small circle √196=14.
a)Radius =14÷2=7cm.
b) Area for 1 small circle = πr²
= 22/7 × 7²
=154
Area for 1 small shaded part in 1 small square = (196-154)÷4
=10.5
Total have 16 small shaded part = 16×10.5=168
Total shaded part for figure= 1 circle + 168
= 154+168
= 322 cm ²
Date Posted:
4 years ago
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