Answer:
138 cm.
Step-by-step explanation:
So first, we find the S.A. of the front and back.
The diagram says the side length of the front is 3 cm. and 3 cm.
3x3=9. So then, the back is also 9 cm, 9+9=18.
Now to find the S.A.'s of the four sides, you have to see the side lengths of each of them. The side lengths are 3 and 10.
3x10=30. This means each of them is 30 cm.
30x4=120. 120 is the total surface area of the four sides.
To find the total surface area of the whole rectangle, you add all the surface areas.
120+18=138 cm. (Not squared, since it's surface area and not area.)
Simple interest formula:
I=PRT
I(interest money created in dollars)
P(initial amount of money)
R(interest rate as a decimal)
T(time in years)
I=7000(.07)(6)
I=$2,940
Therefore, the future value of A is $2,940
Answer:
its B
Step-by-step explanation:
I just did it
Answer : 7.5 ft
Step-by-step explanation:
when the length of the shadow is 8ft, the actual height of the man = 5ft
8:5
let the giraffe be 'x' ft tall.
if the length of the shadow is 12ft, actual height = x ft
12:x
8:5 x 12:x
× 
x= 
x=7.5 ft
Therefore, the giraffe is 7.5ft tall.
