Answer:
=268 cm²
Step-by-step explanation:
S=(4×10+4×5+5×10)×2×6×4=268cm²
The surface area of the composite figure = the surface area of the bottom cuboid + the flank area of the top Cuboid
Answer: D. -40x^3+25x^2+45x
Answer:
39 ft squared
Step-by-step explanation:
If we divide the shape into shapes, we get a 3 by 2 rectangle and a 11 by 3 rectangle. 3*2=6 and 11*3 = 33. 33+6 = 39
3200*8=25600. 25600*0.045=256*4.5=256*9/2. 256/2=128. 128*9=1152. Therefore, the answer is 1152.