Surface area of the cylinder is 251.2 cm² and volume is 141.3 cm³.
More volume is that of the cylinder when height is tripled to 15 inches and radius is 3 cm.
Step-by-step explanation:
- Step 1: Given radius = 3 cm and height = 5 cm, find surface area and volume of the cylinder.
Surface area = 2πrh + 2πr² = 2πr(h + r)
= 2π × 5 (3 + 5) = 2 × 3.14 × 40 = 251.2 cm²
Volume = πr²h = 3.14 × 3² × 5 = 141.3 cm³
- Step 2: Find new volume when radius = 6 cm and height = 5 cm
Volume = 3.14 × 6² × 5 = 565.2 cm³
- Step 3: Find new volume when height = 15 in and radius = 3 cm
15 inches = 15 × 2.54 cm = 38.1 cm (∵ 1 in = 2.54 cm)
⇒ Volume = 3.14 × 3² × 38.1 = 1076.7 cm³
∴ More volume can be attained if the height is tripled to 15 inches while radius is still at 3 cm.
Answer:
16x^2-12x+9
explanation:
64x^3-27 by 4x-3 = 16x^2-12x+9
Answer:
5
Step-by-step explanation:
5 (l)x4(h)=20
(l)=laps
(h)=Hours
Answer:
The value of x will be:
or
Step-by-step explanation:
Given
To determine
hypotenuse x = ?
For a right-angled triangle with sides, a and b the hypotenuse c is defined as
substituting a = 22, b = 22 and c = x
Apply radical rule: ![\sqrt[n]{ab}=\sqrt[n]{a}\sqrt[n]{b},\:\quad \mathrm{\:assuming\:}a\ge 0,\:b\ge 0](https://tex.z-dn.net/?f=%5Csqrt%5Bn%5D%7Bab%7D%3D%5Csqrt%5Bn%5D%7Ba%7D%5Csqrt%5Bn%5D%7Bb%7D%2C%5C%3A%5Cquad%20%5Cmathrm%7B%5C%3Aassuming%5C%3A%7Da%5Cge%200%2C%5C%3Ab%5Cge%200)
or
Therefore, the value of x will be:
or
Answer: The 80ml is the best deal
Step-by-step explanation:
Bc the half price of 45 is 22.5 so 45 + 22.5 equals $67.50 and the 80ml would equal 55.
Therefore the 80ml one is cheaper than the 50ml
