Question

Determine a área das figuras planas abaixo.

Answer 1

b) c^2 = a^2 + b^2
(x)^2 = (10)^2 + (x-2)^2
x^2 = 100 + [ (x)^2 - 2 (x) (2) +(2)^2
x^2 = 100 + x^2 - 4x +4
x^2 - 100 -x^2 + 4x - 4 = 0
- 100 + 4x - 4 =0
4x = 100 + 4
4x = 104
x = 104/4
x = 26cm

x - 2 》26 - 2 》 24 cm
x 》 26cm

d) A=bxh/2
A= 12 cm x 6 cm /2
A= 26 cm^2/2
A=13 cm^2