Question

Ayuda con esto, es para hoy pls

Answer 1

Respuesta:

Pregunta 1.

$as = ar - 2asc \\ as = 20 \times 8 - 2( \frac{\pi \times {r}^{2} }{2} ) \\ as = 160 - \pi \times {5}^{2} \\ as = 160 - 25\pi \\ as = 5(32 - 5\pi) \: cm ^{2}$

Pregunta 2

$as = asc - at \\ as = \frac{\pi \times {r}^{2} }{2} - \frac{b \times h}{2} \\ as = \frac{\pi( \frac{10 \sqrt{2} }{2} ) ^{2} }{2} - \frac{2( \frac{10 \sqrt{2} }{2} ) \times \frac{10 \sqrt{2} }{2} }{2} \\ as = \frac{\pi( \frac{100 \times 2}{4}) }{2} - \frac{(10 \sqrt{2} ) \times 5 \sqrt{2} }{2} \\ as = \frac{50 \pi}{2} - \frac{50 \times 2}{2} \\ as = 25\pi - 50 \\ as = 25( \pi - 2)$

Pregunta 3

$as = ac - 2asc \\ as = {8}^{2} - 2( \frac{\pi \times {r}^{2} }{2} ) \\ as = 64 - \pi \times {4}^{2} \\ as = 64 - 16\pi \\ as = 16(4 - \pi)$