The areas of two similar triangles are 20m2 and 180m2. the length of one of the sides of the second triangle is 12m. what is the corresponding side of the first triangle?

4 m.

Step-by-step explanation:

The ratio of the sides = ratio of the square roots of the areas.

Ratio of the sides = √ 20  / √180

= 2√5 / 6 √5

= 1/3

So the length of the required side = 1/3 * 12

= 4

total amount to be paid = $19.5

step-by-step explanation:

given ,

original price = $25.99

discount = 25%

discount amount = 25% of original price

discount amount = 25/100   * 25.99

discount amount = $6.49

hence , the total amount to be paid = original price - discount amount

                                                            = $25.99 - $6.49

                                                            =$19.5

total amount to be paid = $19.5