Answer:
<h2> 12.5 unitsStep-by-step explanation:
Given figure : Trapezoid
Base sides,
a = 2.5
b = 7.5
Height ( h ) = 2.5
Now, finding the area:
Plug the values
Calculate the sum
Reduce the numbers with G.C.F 2
Calculate the product
Hope this helps...
Best regards!
There are 400 balcony seats in the concert hall.
<u>Step-by-step explanation</u>:
Step 1 :
Total seats = Lower seats + balcony seats
Step 2 :
Tickets sold = 1/5 of total tickets.
⇒ 170 = (1/5)x
⇒ x = 5170
⇒ x = 850 tickets
∴ Total seats in the concert hall is 850.
Step 3 :
Total seats = 450 + balcony seats
850 - 450 = balcony seats
∴ balcony seats = 400