Question

Me ajudem por favor! esse trabalho vai valer 6,0 pontos é pra hoje !!

Answer 1

A) 8*8 = 64cm²
E) (2*3)/2 + 4*3 = 3 + 12 = 15cm²
F) 16,5*27 = 445,5cm²
G) (5*12)/2 = 60/2 = 30cm²
I) ((1*4)/2)*2 + 5*4 = 4 + 20 = 24cm²

Answer 2

a) $S=l^2$

$S=8^2$

$S=64~\text{cm}^2$.


b) $S=bh$


$S=12,5\cdot3,2$

$S=40~\text{cm}^2$


c) $S=r^2\cdot(\pi)$

$S=4^2\cdot(\pi)$

$S=16\pi~\text{cm}^2$.


d) $S=\dfrac{bh}{2}$

$S=\dfrac{8,5\cdot14}{2}$

$S=\dfrac{119}{2}$

$S=59,5~\text{cm}^2$


e) $S=\dfrac{(B+h)\cdot(h)}{2}$


$S=\dfrac{(6+4)\cdot3}{2}$

$S=\dfrac{10\cdot3}{2}$

$S=15~\text{cm}^2$


f) $S=bh$

$S=27\cdot16,5$

$S=445,5~\text{cm}^2$


g) $S=\dfrac{bh}{2}$

$S=\dfrac{12\cdot5}{2}$

$S=30~\text{cm}^2$


h) $S=bh$

$S=6,4\cdot28,5$

$S=182,4~\text{cm}^2$


i) $S=\dfrac{(B+b)\cdot(h)}{2}$

$S=\dfrac{(7+5)\cdot4}{2}$

$S=24~\text{cm}^2$

j) Área do quadrado:

$S=l^2$

$S=2^2$

$S=4~\text{m}^2$

Áreas das semicircunferências:

$S=\dfrac{r^2\pi}{2}$

$S=\dfrac{1^2\pi}{2}$

$S=\dfrac{\pi}{2}$

Área total:

$S_t=4+2\cdot\dfrac{\pi}{2}$

$S_t=4+\pi~\text{m}^2$.