450/25= 18
where 450 is $4.50 and 25 is one quarter. there will be 18 quarters.
560-450=110
110/10=11
where 110 is $1.10 and 10 is one dime. there will be 11 dimes.
11+18= 29
where 11 is total number of dimes and 18 is total number of quarters. and 29 is total number of coins
Answer:
Step-by-step explanation:
cos theta is 2/3 because cos means reciprocal of sec
=(1/2) * 2 * 3.2 + (1/2) *2 * 3.2 + (1/2) * 2 * 4 + (1/2) * 2 * 4
= 2 * 3.2 + 2 * 4
= 2 * (3.2 + 4)
= 2 * 7.2
= 14.4 sq feet
2 * 14.4 = 28.8 sq feet
