Step-by-step explanation:
512+18=530
423+12=435
5421+14=5435
6324+32=6356
7985+23=8008
It’s “A” because you need to add the four sides together which gets you the 40 cm sorry if it is wrong but I think it is that
Well I THINK triangle ABC is just a stretched out version of triangle DEF.
To find the area of a triangle, you multiply base and height, and divide by 2.
Area of DEF is 6, so that means that (4 * x)/2 = 6.
6*2 = 12....
4 * x = 12........
4 * 3 = 12.
x = 3.
Comparing DEF to ABC: ABC's base is 3 times as long as DEF's. So that means the height must be three times as long.
3*3 = 9.
(12 * 9)/2 =54
Answer:
2x * (9 + 5x^2)
Step-by-step explanation:
