de 10 cm and semicircles
6. Find the area of the shaded design in Figure, where ABCD is a square of side 10 cm and son
are drawn with each side of the square as diameter. (Use 3.14)
B
Verify that numbers given along side of the cubic polynomials below are their zeros. Also, verify the
Answers
Let Unshaded regions be 1, 2, 3 and 4
Area of 1 + Area of 3= Area of ABCD – Areas of two semicircles of each of radius 5 cm
Area of 1 and 3 = ( 10 * 10 - 2 * 1/2 * 3.14 * 5 *5) [Area of semi circle = 1/2 pie r²]
= (100 - 3.14 * 25)
= (100 - 78.5)
=21.5 cm²
So,
Even the Area of 2 and 4 is equal to 21.5cm²
So,
Area of shaded region = Area of ABCD - Area 0f( 1+2+3+4)
= 100 - (21.5 + 21.5)
= 100 - 43
Area of shaded region = 57cm²
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Let Unshaded regions be 1, 2, 3 and 4
Area of 1 + Area of 3= Area of ABCD – Areas of two semicircles of each of radius 5 cm
Area of 1 and 3 = ( 10 * 10 - 2 * 1/2 * 3.14 * 5 *5) [Area of semi circle = 1/2 pie r²]
= (100 - 3.14 * 25)
= (100 - 78.5)
=21.5 cm²
So,
Even the Area of 2 and 4 is equal to 21.5cm²
So,
Area of shaded region = Area of ABCD - Area 0f( 1+2+3+4)
= 100 - (21.5 + 21.5)
= 100 - 43
Area of shaded region = 57cm²
Mark This Brainliest If This Helped u