After raining for 3/4 of an hour a rain gauge is 2/5 filled if it continues to rain at that rate for 15 more minutes. wath fraction of the rain gauge will be filled

part of rain gauge is filled after 1 hour.

Explanation:

Given:

After raining for of an hour a rain gauge is  filled  

To Find:

The fraction of the rain gauge that will be filled if it continues to rain at rate for 15 more minutes=?

Solution:

We know that, 15 minutes are of a hour

Then, we have to find the fraction of rain gauge filled after of hour more,  

Then, we have to find after   of hour +  of hour is 1 hour.

Now,   hour =   of rain gauge

In 1 hour n of rain gauge  is filled.

Then,  n x = x 1  

n =  \times  

n =  

Hence, part of rain gauge is filled after 1 hour.

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6