Um quadro com área de 4050 cm2 tem de largura duas vezes a sua altura. quais são as dimensões desse quadro?

Step-by-step

Given: a picture frame is twice as wide as it is high and has an area of 4050 cm^2.   Find its dimensions.

Method 1: solve mentally

A quick mental way to solve the problem is to imagine cutting into two lengthwise.  Each half will be a square of 4050/2=2025 cm^2 = 45cm *45 cm

Therefore the frame is 45cm * 90 cm.

Method 2: Using Algebra if pencil and paper is available

Let H=height of the frame

Then 2H = Length of the frame.

Area of frame = Length * Height = 2H *H =4050 cm^2

Solve for H :

2H^2 = 4050

H^2 = 4050/2 = 2025

H = sqrt(2025) = 45 cm

Length = 2H = 90 cm

a. turk and mcalister

b. howard, mission, and market

c. yes. since streets end some do not cross yet are not parallel to others. example: mcalister and 5th

step-by-step explanation:

parallel lines are lines which do not intersect ever and look a lot like railroad tracks. turk, mcalister and golden gate are examples of these.

intersect are streets which cross each other and a car on one can reach the other. howard, mission, and market intersect with 6th.

skew lines are lines which neither intersect nor are parallel. these lines exist here because some streets end and never intersect another like mcalister and 5th.