Question

A mirror of length 30 cm and width 20 cm is to beframed with a 2 cm wide frame.find the area of the frame required. Also find the cost of farming at the rateof ₹20 per cm sq​

Answer 1

Answer:

length:30cm

width:20

breadth:2cm

area of frame :l*b*h

:30*20*2

:1200cm2

the cost of farming at the rate 1:20cm

1200:20*1200

:24000rupees

Answer 2

The area of the frame required is 216 sq.cm. and the cost of framing is Rs.4320

Step-by-step explanation:

Length of mirror = 30 cm

Breadth of mirror = 20 cm

Width of frame = 2 cm

So, Outer length = 30+(2+2)=34 cm

Outer breadth = 20+2+2=24 cm

Area of frame = Outer area - inner area = $(34 \times 24)-(30 \times 20)=216 sq.cm.$

Cost of framing 1 sq.m. = rs.20

Cost of framing 216 sq.m. = 216 \times 20 = Rs.4320

Hence the area of the frame required is 216 sq.cm. and the cost of framing is Rs.4320

#Learn more:

A path 2m wide surrounds a garden,20m by 10 m. Find the area of the path and the cost of paving the path at Rs10 per metre square

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