Q: What is the area 8km x 4 km?

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An area of 5km radius implies a circle. The area of a circle of radius r is {pi}r2. Area ~= 3.14 x 5 x 5 km2 ~= 78.54 km2.

Since 1 km is 1000 metres, 4.5 km x 1000m/km = 4,500 metres

(20 km/liter) x (1 mile/ 1.609344 km) x (0.94635 liter/qt) x (4 qt/gal) = (20 x 1 x 0.94635 x 4 / 1.609344) (km - mile - liter - quart / liter - km - quart - gallon) = 47.04 mi/gal ========================== -- Take the number of km per liter -- Multiply by 2.352 -- The answer is the number of miles per gallon

4.5 km x 1000 meters in kilometer = 4500 m

(60 km/hr) x (4 hr) = 240 km.

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11 km x 8 km = 88 km2 88 km2 / 2 = 44 km2

Area of a sphere is (4) pi x r2. Since the earth's radius is about 6400 km then Area = (4) x pi x (64002) = 515,000,000 = 5.15 x 108 square kilometers

22.1 km. Area of a rectangle =L x W

59,778

Area of a circle = (pi) x (square of radius) = (pi) x (5)2 = 25 pi = 78.54 square km (rounded)

3.5 x 3.5 sq km...

Area of the triangle (1/2 x base x height) =1/2 x 2 km x 3 km = 3 km2

An area of 5km radius implies a circle. The area of a circle of radius r is {pi}r2. Area ~= 3.14 x 5 x 5 km2 ~= 78.54 km2.

11.6 km

356 km / 1 hr = 1424 km / x hrs 356 = 1424/x 356x = 1424 x = 1424/356 x = 4 About 4 hours.

1,544,408 sq km.

1 km x 2 km = 2 km2