a rectangular mirror 15 cm× 12 cm is to be framed with of 2 cm wide frame find the area of the frame
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area of frame = area of whole mirror-area of mirror without frame
=15x12 -[(15-2)(12-2)]
=180-[13 x 10]
=180-130=50cm²
so area of frame =50cm²
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Just understand that while framing, the frame will overlap the original mirror.
So area of original mirror=15×12=180cm²
Area of the visible part of the mirror when the frame is fixed on it=(15-2)×(12-2) = 130cm²
So area of the frame=180-130= 50cm²
So area of original mirror=15×12=180cm²
Area of the visible part of the mirror when the frame is fixed on it=(15-2)×(12-2) = 130cm²
So area of the frame=180-130= 50cm²
AyushTiwari110:
hey saniya i answered correct, mark my as brainliest
he answered wrong and afterwords he corrected
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