Using disks ...

The volume is 21π units³ ≈ 65.97 units³
Answer:
15 165
Step-by-step explanation:
m1 + m2 = 180
x-18 +5x = 180
6x = 198
x = 33
m1 = 15
m2 = 165
Firstly let's find hypotenuse(let it will be "n" of smaller triangle
Let use Pythagorean theorem

Now we need to find hypotenuse(x) of bigger triangle

The value of x must be rounded to 1 DP, so

Answer: x=24.1
Answer:
8.1
Step-by-step explanation:
2x^2 -9 = 121
+9 +9
2x^2 = 130
/2 /2
x^2 = 65
x= sqrt (65)
x= 8.06225...
x = 8.1