The perimeter of a rhombus is 40. What is the area of the square?

96 cm squared

Step-by-step explanation:

A rhombus has 4 edges of equal length. If it has perimeter of 40cm, then each length would be

40cm

 4           = 10cm

Divide the rhombus into 4 right-angle triangle by cutting along the 2 diagonals.

Each right-angle triangle will have a hypotenuse of 10cm and one other edge with length

12cm

2         =  6cm

Use Pythagoras Theorem to find the length of the remaining edge.

√(10cm) squared − (6cm) squared = 8cm

Now find the area of the triangle.

1

2 × 6cm ×8cm =24cm squared

Since the original rhombus was made up of four such triangles, the area of the rhombus would be

24cm squared × 4 = 96cm squared

[2, 2.5)

(2.5, 3]

step-by-step explanation:

i think its these two not sure [2, 2.5)

(2.5, 3]

answer: input the dimensions of the room to be painted. click the button to calculate the amount of paint and man-hours needed for this job.

interior paint coverage depends on the brand of paint used. the coverage amount is listed on the label of the paint can. use this to adjust the values in the paint coverage section below. paint usually is applied at 350 to 400 square feet per gallon (primer at 200 to 300 square feet per gallon).

step-by-step explanation: