2 x radius.
Description
In geometry, a diameter of a circle is any straight line segment that passes through the centre of the circle and whose endpoints lie on the circle. It can also be defined as the longest chord of the circle. Both definitions are also valid for the diameter of a sphere.
The first number would be 6 and the second would be 24
x+4x=30, in which x=6
Hope this helped :)
75% = 75/100 = 3/4
64*3/4 = 48
Step-by-step explanation:
1.
x=5
y=4
2.x=4.2
y=19.8
3. x=16
y=70.4
4. a=28
b=25/7
5.a=20
b=18
6. a=51
b=75
7. x=30
y=21
8.a=27
b=6
hope it helps:)
ignore that fig '-'
Answer:
24
Step-by-step explanation:
4a+2b= 86 cm
a²+b²= 386 cm²
a+b=?
----------
- 4a+2b= 86
- 2a+b= 43
- (2a+b)²=43²
- 4a²+4ab+b²=1849
b²= 386- a², b= 43- 2a
- 4a²+4a(43-2a)+386-a²-1849=0
- 4a²+172a-8a²-a²-1463=0
- -5a²+172a-1463=0
- 5a²-172a+1463=0
solving quadratic equation we get
a=19 - integer solution
b= 43-2*19= 5
a+b=19+5=24
