How many ways are there to make $20 using $10-bills, $5-bills and/or $1-bills?

8

Step-by-step explanation: 10+10

10+5+5

5+5+5+5

10+1+1+1+1+1+1+1+1+1+1

1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1

5+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1

5+5+1+1+1+1+1+1+1+1+1+1

5+5+5+1+1+1+1+1

10+5+1+1+1+1+1

126.66 m²

step-by-step explanation:

the pertinent area formula is a = πr², where r is the radius.

here, a = π(6.35 m)² = 40.32π, or approximately 126.66 m²

costs the what? what is the cost of the pants?

step-by-step explanation:

if it is $10, then the price is 14.

take 40% of the cost, and then add the cost.

40% of 10 = 4

4+10 = 14.