Hello,
sin² x-cos² x=sin² x-(1-sin² x)=2sin² x-1
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The volume of the new squad would be the volume of the original square times 11^2 which is 121
Answer:
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perimeter or rectangle= 2l+2w
Surface area of a cylinder=2(pi)r^2+2(pi)r
Volume of a triangular prism=Bh
Area of a circle=(pi)r^2