English: As an engineer, I can say without question that I have not seen this level of professional engineering anywhere in the county and maybe in all of the state since I moved here some 12 years ago. For years, the runoff in this area from previous construction has been damaging homes and property. Not only has the county addressed a long-standing problem, but it has also finished the project and dressed the edges of the road properly. All this in about one month, which shows it can be done. If this is

As an engineer, I can say without question that I - id9612783, KayleighMorganhopkin

Ответ:

thestarlexyp32wpj

07.03.2022

25 : 1

Step-by-step explanation:

The diameter of the football is 5 times the diameter of the cricket ball. This means that the radius of the football is also 5 times the radius of the cricket ball.

Let the radius of the football be R.

Let the radius of the cricket ball be r.

This implies that:

R = 5r

Both balls are spherical.

The surface area of the cricket ball is given as:

$a = 4\pi r^2$

The surface area of the football is given as:

$A = 4\pi R^2$

$=A = 4\pi (5r)^2\\\\A = 100\pi r^2$

Therefore, the ratio of their surface areas is:

A : a

$100\pi r^2 : 4\pi r^2$

= 100 : 4

25 : 1

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