Heloppl's answer to dogman's Primary 6 Maths Singapore question.
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Area of big triangle - area of quadrant - area of small triangle =
(1/2 x 20 x 20) - (1/4 x 3.14 x 10 x 10) - (1/2 x 10 x 10)
= 200 - 78.5 - 50
= 71.5 cm^2
(1/2 x 20 x 20) - (1/4 x 3.14 x 10 x 10) - (1/2 x 10 x 10)
= 200 - 78.5 - 50
= 71.5 cm^2
Date Posted:
3 years ago
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