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6.75 cm

225.66 cm²

Step-by-step explanation:

V= 1/3lwh= 180

V= 1/3*10*8*h= 80h/3 cm³

Surface area of the pyramid:

A=lw+l√(w/2)²+h²+w√(l/2)²+h²

step-by-step explanation:

dilation scale factor 2: starting with δabc, draw the dilation image of the triangle with a center at the origin and a scale factor of two. notice that every coordinate of the original triangle has been multiplied by the scale factor (x2). dilation with scale factor 2, multiply by 2.