Question

por favor q alguien me ayude a resolver esta wea porfaaaaa

Answer 1

TRIÁNGULO EQUILÁTERO

*Ecuación

P = l + l + l

16.5 = x + 3 + x + 3 + x + 3

16.5 = 3x + 9

16.5 - 9 = 3x

7.5 = 3x

7.5/3 = x

2.5 = x

*Valor de lq incógnita

x = 2.5

*Comprobación

L = 2.5 + 3

L = 5.5

P = 5.5 × 3

P = 16.5

CUADRADO

*Ecuación

P = l × 4

10.4 = (3x - 7) × 4

10.4 = 12x - 28

10.4 + 28 = 12x

38.4 = 12x

38.4/12 = x

3.2 = x

*Valor de la incógnita

x = 3.2

*Comprobación

L = 3 (3.2) - 7

L = 9.6 - 7

L = 2.6

P = 2.6 × 4

P = 10.4

RECTÁNGULO

*Datos

Largo = 3x - 8

Ancho = 2x - 2

*Ecuación

P = (l × 2) + (a × 2)

12 = (3x - 8) (2) + (2x - 2) (2)

12 = 6x - 16 + 4x - 4

12 = 10x - 20

12 + 20 = 10 x

32 = 10x

32/10 = x

3.2 = x

*Valor de la incógnita

x = 3.2

*Comprobación

L = 3 (3.2) - 8

L = 9.6 - 8

L = 1.6

A = 2 (3.2) - 2

A = 6.4 - 2

A = 4.4

P = (4.4 × 2) + (1.6 × 2)

P = 8.8 + 3.2

P = 12

\ (•◡•) /