Question

Me ajudem,por favor

Answer 1

a) s=l²

s=3,2²=10,24cm².

b) s=c.l

s=5,6.2,8=15,68cm²

c) s=c.l

s=4,5.2,4=10,8cm²

d) s=(D. d)/2

s=(3,2.2,4)/2=1,6.2,4=3,84cm²

e)

$s = \frac{(B+b).h}{2}$

$s = \frac{ (6+2,8).3,6}{2} = 8,8.1,8 \\ s = 15,84 {cm}^{2}$

f)

$s = \frac{(B+b).h}{2}$

$s = \frac{ (4,6+3).3,6}{2} \\ s = 7,6.1,8 = 13,68 {cm}^{2}$