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ABCD is a square of side length 15cm. APC and AQC are arcs of the circles with centres D and B. Calculate the area of the unshaded part?

ABCD is a square of side length 15cm. APC and AQC are arcs of the circles with centres D and B. Calculate the area of the unshaded part? class=

Verified Answer :

caylus

Hello,

the area of the unshaded part is composed of 2 equal parts

Area of the square(side a) : a²
Area of the 1/4 cercle: πa²/2

the area of the unshaded part: 2(a²-πa²/4)=a²/2 (4-π) with a=15
Area=96,5708... (cm²)


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