Answer:
580 cm^2
Step-by-step explanation:
First, find the area of the front and back. 20*10=200
There are 2 sides with 20*10 ( front and back) so we can multiply by 2. 200*2=400
Then, the sides. 3*20=60*2=120
Then, the top and bottom 10*3=30*2=60
400+120+60=580
For this question, first find the area of the original square.
30*30 = 900.
Next, find the length of the sides if it is increased by 20%.
30 = 100%.
3 = 10%
6 = 20%.
So, the new length would be 36 cm. Next, find the new area.
36 * 36 = 1296.
The original area was 900.
1296 - 900 = 396
(396/900) *100 = 44%
44% increase.
Hope this helps!
Answer:
45 students per bus.
Step-by-step explanation:
225 divided by 5 is 45.