C
Step-by-step explanation:
(b) 140 in
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
understand that i don't know the answers
will someone answer his question