+225 can someone help me... i keep getting both wrong
Sketch a net of each regular pyramid. Then use the net to find the surface area of the pyramid.
+4622 Oh, the net! Sorry, can't do it here!
(a): Base: 10*10=100u^2. 4 of the same triangle faces, so 4*(1/2*10*20)=4*100=400u^2.
Therefore, 100u^2+400u^2=500u^2!
(b): Base: 1/2*5.2*6=5.2*3=15.6, and looks like 3 of the same faces, with bases of 6(equilateral triangle), 3*(1/2*9*6)=3*27=81u^2, so 15.6u^2+81u^2=96.6u^2.
I might be wrong, someone please check!
