(0.35+5.2)(3.9)=4.75
Answer:
notttaaa
Step-by-step explanation:
acc to ques....perimeter of figure= 3a^2+15a+9
let missing dimension be x
= x+10a-2+a^2-7+5a=3a^2+15a+9
x+15a+a^2-9=3a^2+15a+9
x=2a^2+18
a) 121,000
b)8.35 x 10^-6
Check the picture below.
