Question

Ayuda por favor responder bien por que si no los reporto

Answer 1

Explicación paso a paso:

a) P= 4 (20 m) = 80 m

$a {}^{2} = (20 m) {}^{2} = 400 m^2$

b) P = 2( a + b) = 2(8 m + 12 m) = 2 ( 20 m) = 40 m

a = a . b = (8 m) (12 m) = 26 m^2

c)

$p =a + b + c = 5m + 7m + 9m=21m \ \ \\ a = 1/2 b h = 1/2 (5m ) (7m) = 1/2 ( 35m^2) = 17.5 \: m^2$