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The diagram shows a rectangle.
10.5 cm
Not drawn accurately
7 cm
Four of these rectangles are put together as shown.
Not drawn accurately
Calculate the shaded area.

The diagram shows a rectangle 105 cm Not drawn accurately 7 cm Four of these rectangles are put together as shown Not drawn accurately Calculate the shaded area class=

Respuesta :

Eyadaqrabawi

Answer:

To solve this we calcuclate the total are then we subtract the 4 rectangles area

total area = length × width =10.5 × 10.5 = 110.25 cm²

the rectangles drawn accurately = 2(.5 × 7)

7 cm²

the rectangles drawn not accurately 2(.5 × 10.5)

= 10.5 cm²

so the shaded area = 110.25 - 7 - 10.5 = 92.75 cm²

semsee45

Answer:

42 cm²

Step-by-step explanation:

We can see that the length of the blue rectangle is the same as the length of the smaller rectangle = 7 cm.

To calculate the width of the blue rectangle, we take the length of the smaller rectangle (7 cm) and substract two of the width (0.5 cm) of the smaller rectangle:  

7 - (2 x 0.5) = 6 cm

Now we have the length and width of the blue rectangle.

Are of blue rectangle = l x w = 7 x 6 = 42 cm²

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