195.5
195.5
440
Total surface area is 903.77 cm2
1.734m2
195.5
195.5
440
Oh, dude, you're hitting me with the math questions, huh? So, to find the area of a triangle, you use the formula: 0.5 x base x height. In this case, the base is 8cm and the height is 10cm, so the area would be 0.5 x 8 x 10 = 40 square centimeters. But those side lengths you mentioned? They're just there to confuse you; we don't need 'em for this calculation.
Total surface area is 903.77 cm2
1.734m2
Area = Base * Height so Base = Area/Height
Divide the area by the height
Area = 0.5*Base*Height
60 cm2
You find the height by using Pythagoras' theorem and then 0.5*base*height = area.
Find the area of the base, find the height of the pyramid. Volume = (1/3)*(area of base)*(height)