How do I change from feet to metres - Lowrance Elite 5 Color SonarGPS Combo

First, we need to determine the number of square units in the Imperial system. We can choose to do the calculation in feet or inches.

Let's do it in inches first. There are 12" in a foot, so we multiply 90,000 by 12 to get 1,080,000 linear inches. Multiplying this by 41.3", we get 44,604,000 square inches. We can convert this to square feet by dividing the number of square feet by the square inches in a square foot. Since a square foot is one foot by one foot, or 12 inches by 12 inches, there are 144 square inches in a square foot. Dividing our previous answer by 144 will give us 309,750 square feet.

Converting to square metres. An inch is defined as 2.54 centimetres ("cm"). Thus, there are 2.54cm x 2.54cm in a square inch or 6.4516cm^2 in a square inch.

Using the 44,604,000 square inches we got above, and multiplying this by 6.4516, we get 287,767,166.4 square cm. There are 100 cm in a metre, so there are 100cm x 100cm in a square metre. So there are 10,000 square centimetres in a square metre. I get 28,776.7 square metres.

There are 3.280839895 feet in a metre. So there are 3.280839895 x 3.280839895, or 10.76391042 square feet in a square metre. Taking 309,750 square feet and dividing by the 10.76391042 we get 28,776.7 square metres.

Good luck.

Paul

One square foot is about 0.09290 square metres.
One square metre is about 10.76 square feet.

One foot is exactly 0.3048 metres.

1194 square feet is about 110.93 square metres.

One foot is exactly 0.3048 metres. One metre is 1/0.3048 feet or about 3.28 feet. So one metre per second is about 3.28 feet per second.

Simply square the conversion factor between feet and metres to get the conversion factor between square feet and square metres.

One foot is 0.3048 metres, so squaring that gives one square foot is 0.09290304 square metres.

A foot is a measure of length while a square metre is a measure of area.

One foot is exactly 0.3048 metres, so a square metre is about 10.7634 square feet. Thus 1000 square metres is about 10,764 square feet.

A foot is exactly 0.3048 metres and an inch is exactly 0.0254 metres. So, 30 cubic metres is about 1059 cubic feet or 1830712 cubic inches.

The limit on firewire 400 is 16 feet (5 metres). You can buy firewire repeaters but you would need several. Firewire 800 is ok for 32 feet / 10 metres which means that less repeaters would be needed. However in both cases an optical repeater can be used for up to 3200 feet!! (1000 metres) for 400mbps or 1600 feet (500 metres) for 800mbps.

Hi!
If your unit's serial number tag (on the bottom) has an 'X' after the model number.....Pmax 210X then you can change it to meters. The 'X' means international. If it is a US domestic model you are stuck with feet.
Here's the manual for the sounder in case you need it:
Pmax 210
Best of luck!
Mike

Per "Sector" all of their watches are "water resistant to a minimum of 300 feet". Note that they do not say "water proof".