The power of a number $a$ says how many times to use the number in a multiplication. It is written as a small number to the right and above the base number ( $a^n$ ).

To find the value of $a^n,$ you have to multiply n numbers a:

$a^n=a\cdot a\cdot \dots\cdot a\ [\text{Multiply n numbers } a]$

You have to find $5^3.$ Use the definition of powers:

$5^3=5\cdot 5\cdot 5\ [\text{Multiply three numbers 5}]\\ \\5^3=25\cdot 5\\ \\5^3=125$

8 0

3 years ago

Work out the height of this cone

Blababa [14]

Answer:20 cm

Step-by-step explanation:

Volume of cone=540π

Radius=r=9

Volume of cone=1/3 x π x r^2 x h

540π=1/3 x π x 9^2 x h

540π=1/3 x π x 9 x 9 x h

540π=(1xπx9x9xh)/3

540π=(81πh)/3

540π=27πh

Divide both sides by 27π

540π/27π=(27πh)/27π

20=h

h=20

Height =20 cm

6 0

3 years ago