A giant model of a magnet is being built for a museum exhibit. What is the total surface area of that will need to be painted if the depth of the magnet is 3 feet deep? 10 ftlong,10ft high,8 ft long
the option are
370
180
410
330
answer using the options
does any one know the answer
wrong
the option are
370
180
410
330
First, we need to calculate the surface area of each face of the magnet:
- Top and bottom faces: 10 ft x 8 ft = 80 sq ft each
- Front and back faces: 10 ft x 10 ft = 100 sq ft each
- Side faces: 8 ft x 10 ft = 80 sq ft each
There are two top and bottom faces, two front and back faces, and four side faces, so we can calculate the total surface area as:
2(80 sq ft) + 2(100 sq ft) + 4(80 sq ft) = 360 sq ft
Since we need to paint both the inside and outside of the magnet, we need to double this value:
360 sq ft x 2 = 720 sq ft
Therefore, the total surface area that needs to be painted is 720 square feet.