Answer:
10%
Step-by-step explanation:
Marked price of the shirt = Rs 1000
Sale price = Rs 900
Decease = (1000 - 900) Rs
= Rs 100
% decrease = decrease /marked price x 100%
That’s 100/1000 x 100%
0.1 x 100
10%
Answer:
49π
Step-by-step explanation:
πr^2
π*7^2
49π
Answer:
4.5 x 2
Step-by-step explanation:
4.5 x 2 = 9
Hope it helps
Answer:
The volume of the cone is;
100 π inches^3
Step-by-step explanation:
To calculate the volume, we need the height
We can get the height from the slant height and the radius
Mathematically, we use Pythagoras’ theorem for this as the slant height, the radius and the height forms a right-angled triangle
The right-angled triangle has the slant height as its hypotenuse
By the theorem, the square of the hypotenuse equals the sum of the squares of the two other sides
Let the height be h
Thus;
12^2 = 5^2 + h^2
169= 25 + h^2
h^2 = 169-25
h^2 = 144
h = √1144 inches = 12 inches
The volume of the cone is;
1/3 * π * r^2 * h
= 1/3 * π * 5^2 * 12
= 100 π inches^3
