Find the total area for the regular pyramid

T. A =

4 + 4sqrt(10)

Step-by-step explanation:

TA = square + 4(slant triangles)

Area of square = 2² = 4

Use pythagoras theorem to find the slant height 'h':

h² = 3² + 1²

h² = 9+1 = 10

h = sqrt(10)

Area of a triangle = ½×2×sqrt(10)

= sqrt(10)

TA = 4 + 4(sqrt(10))

TA = 4 + 4sqrt(10)

sqrt: square root

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m