Question

The ratio of the radius of the base of a cone to the height is 7.3. If the height of the cone is 8.1cm. calculate correctly to one decimal place the volume of the cone (take n = 22/7)

Answer 1

Answer:

3,031.2 cm³

Step-by-step explanation:

I assume the ratio is 7 : 3

$\frac{r}{h}$ = $\frac{7}{3}$ ===> 3r = 7h ===> r = $\frac{7h}{3}$

r = (7 × 8.1) / 3

r = 18.9 cm and h = 8.1 cm

V = π r² (h/3)

V ≈ (22/7)(18.9)²(8.1/3) = 3,031.2 cm³