Well, the lateral edges are equal to the height. Use the pathogorean theorem using a^2+b^2=c^2.
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(1/2 B)h another way is Lateral area + base area. Lateral area is 1/2 perimeter*slant height. You use this if you dont know the height but know the slant. or if you just like to do it this way
Lateral area is 188.5 m2
210 in 2
72 cm square.
Total surface area= 1/2 times the perimeter of the base times the slant height plus the area of the base Lateral surface area= 1/2 times the perimeter times the slant height