Respuesta :

asmaf2065

Answer:

(b) 140 in

Step-by-step explanation:

by the formula (a + b)/2 × h

where a = 15

b = 15 + 4 + 6 =25

h = 7

(15 + 25)/2 × 7

40/2 × 7

20 × 7

140

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