20 12——20 13 formative examination paper of sixth grade mathematics in primary school last semester (3) Unit 4 - Training Enrollment Network

20 12——20 13 formative examination paper of sixth grade mathematics in primary school last semester (3) Unit 4

The side length of a square is 6, and the shaded part in the figure = square area-1/4 circle area.

The radius of the 1/4 circle is 6, so:

Shadow area = square area-1/4 circular area =6X6- 1/4 X π X 6 X 6 =36-9π.

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