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.)
Answer:
Choice A
Step-by-step explanation:
That's because IJ and UV are both in between two angles which are congruent to each other
Answer:
108
Step-by-step explanation:
Hope I help :)
Answer:
Number 1: a = 5
Step-by-step explanation:
Here cross multiplication is applicable, as such:
10 * 3 = 6 * a
30 = 6a
a = 5
