A triangular pyramid measured 10cm by 7cm has a height of 11cm.calculate to the nearest whole number
1)total surface area
2)volume
Draw a side view from the long and short sides.
The long faces have slant height √(3.5^2+11^2)
The short faces have slant height √(5^2+11^2)
The total surface area is thus
base + 2 long triangles + 2 short triangles
the volume is, as always, 1/3 Bh
Now just plug and chug