Respuesta :

alexandrafantonia

Answer:

AT=48.9

Step-by-step explanation:

Formula:

step 1; Aʟ = P ʙᴀsᴇ × Ap

2

step 2; Aᴛ = Aʟ + Aʙᴀsᴇ

Ap= 7cm

Abase= 6.9cm² P️= a + b+ c

length side️=4cm

AL = (4+4+4) × 7

2

= 12 × 7

2

= 84 ÷2

AL = 42

AT = AL + Abase

= 42 + 6.9

AT = 48.9 cm

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