Respuesta :

Answer:

81 cm^2

Step-by-step explanation:

9 x 9 = 81

Area of triangle = 1/2 base x perpendicular height

A= 1/2(9)(10) = 45 cm^2 (there are 4 of these so multiply by 4) 45x4=160 cm^2

The base of prism is 9x9= 81 cm^2

160+81= 241cm^2
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