5a-2a=7+2+5
a(5-2)=14
a=14/5-2
a=14/4
a=3.5
Answer:
A = 148 cm^2
Step-by-step explanation:
To calculate the surface area of the cuboid we use the following equation
A = 2 x (lh + lw+ hw) (l: length, w: width, h: height)
A = 2 x (6*5 + 6*4 + 5*4)
A = 2 x (30 + 24 + 20)
A = 2 x 74
A = 148 cm^2
Answer:

Step-by-step explanation:
circumference

Answer: 12x^2+4
Step-by-step explanation: