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a mirror of lengths a mirror of length 30 cm and with 20 cm is to be framed with the 2 cm wide frame find the area of the frame required that also find the cost of framing at rupees 20 per CM square |
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Answer» here length of the mirror = 30 cm width of the mirror = 20 cm width of the frame = 2cm then length of the inner mirror after framed = 30- (2+2) = 30 - 4 = 26 cm width of the inner mirror after framed = 20-(2+2) = 20-4 = 16cm then, area of the frame = area of the whole mirror - area of the inner mirror = LB- lb = 30× 20 - 26 × 16 = 600 - 416 = 184 cmsq. cost of framing per cm sq. = Rs.20 cost of framing the mirror = 20 × 184 = Rs. 3680 hope it HELPS |
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