Help me with this problem pleaseeee

Mathematics

1 answer:

gladu [14]4 years ago

3 0

Answer:

Step-by-step explanation:

in a square pyramid the base area plus the area of the triangular faces is equal to the total area so we take (9*5) *1/2=22.5 then we multiply 22.5 *4= 90 so we take 90 + 5*5 = 115 so the total area is 115

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