The corresponding sides of δabc and δdef have equal lengths. the area of δabc is 4 square units, and the longest side of δdef is 5 units long. what is the area of δdef? 2 square units 4 square units 10 square units 20 square units

The area of ΔDEF is

Step-by-step explanation:

we know that

If two triangles are similar, then the ratio of its corresponding sides is equal and this ratio is called the scale factor

and

The ratio of its areas is equal to the scale factor squared

In this problem

The corresponding sides of ΔABC and ΔDEF have equal lengths

therefore

the scale factor is equal to

The triangles are congruent

therefore

ΔABC and ΔDEF has the same area

v: l•w•h÷2.

v: 20•6•8 ÷2

v: 960÷2

v: 480

total amount of money that he should pay if he has not used his duty free exemption is $98

step-by-step explanation:

given a united states citizen returning to the states declares the following items at the customs office: 3 shirts at $8.50 each 2 dresses at $27.50 each 1 pair of gold cuff links at $17.50 per pair. we have to find how much he pay

cost of 3 shirts if one cost at $8.50 is

cost of 2 dresses if one cost at $27.50 is  

cost of 1 pair of gold cuff at $17.50

so, total amount of money that he should pay if he has not used his duty free exemption is   $25.5+$55+$17.50=$98