Question

Responda as questões anexadas.

Answer 1

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Ola Gabriela

43)

5² = 4² + x² 
25 = 16 + x²
x² = 25 - 16 = 9
x = 3

perímetro
p = 5 + 5 + 3 + 3 + 2y = 22
2y = 22 - 16 = 6
y = 3

B = 3*3 = 9
b = 3
h = 4

área
A = (B + b)*h/2 = (9 + 3)*4/2 = 48/2 = 24 cm²

44)

(B + b)*h/2 = 260

B + 12 = 520/10 = 52
B = 52 - 12 = 40 cm

45)

a) A = 20*20 = 400 cm²

b) A = 20*20/2 = 400/2 = 200 cm²

c) A = (B + b)*h/2 = (27 + 13)*20/2 = 40*10 = 400 cm²

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