What is the area of house lounge and calculate area of the lounge is 3035 cm * 3850 cm

I could just give you the answer of 140 cm

but I think you need to know how I got this answer
A square is an object that has equal sides
area is calculated by length multiplied by width
so 1225 cm^2 area by using the square root of 1225 cm^2 gives you 35 cm
so each side is 35 cm and there are 4 sides so 35 cm +35 cm + 35 cm + 35 cm = 140 cm
If you are doing homework always show how you got the answer because in an exam having the working out shown can sometimes result in getting some marks even if you slipped up slightly and got the wrong answer.

Find the scaling ratio
Perimeter of first pentagon is 12*5=60 cm
Scale factor (2nd/first)=140/60 =7/3
Ratio of areas varies as the square of the scale factor for the lengths
Area of second / area of first =(7/3)^2 =49/9
Area of second pentagon =248 *(49/9) cm^2
Finish the calculation.

The two pentagons are similar. If k is the scale factor for the lengths, the ratio of the areas is k^2.
Pent 1 side =12 cm
Pent 2 side =140/5 =28 cm
Scale factor (larger over smaller) is k=28/12=7/3
Area of Pent_2= (49/9)*Area of Pent_1
Your answer should be C.

1348.9

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You need to calculate the slant height of the pyramid for the formula of the lateral area. You should find a value of (1/2)*SQRT(203) or about 7.1239 cm



You need to calculate the altitude (height) of the pyramid from the apex (summit) to the center of the base triangle (center of inscribed circle, barycenter, orthocenter). The hypotenuse of such triangle is the slant height. One leg is the altitude (to be found), the measure of the second leg is (1/3) the altitude of the equilateral triangle that forms the base. You should find (1/3) m MH= (1/3)* (11/2)*SQRT(3)


1. Calculate the area of the base (use a formula for the equilateral triangle or the general formula for a triangle: you have its height MH ).
2. Lateral area = 3 times the area of triangle Triangle ECD (in yellow above).
3. Total area = area of base + lateral area.
4. Volume= (1/3)(Area of base)* (height of pyramid)
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One inch is exactly 2.54 cm, so 1 inch squared is a larger area than 1 cm squared.

No, since cm x cm measures an area, while feet measures length. To get an area, you will need ft^2.
188cm x 46cm is 8648 cm^2 . One foot is exactly 30.48 cm, so this is about 9.31 ft^2.

152 cm x 213 cm = 32,376 sq cm
or
1,062.20472 square feet

You sort out the formula for the surface you have to calculate then substitute the numerical values for the variables (sides, bases, heights), the constants if any (pi, etc.) an press = to get the result
Ex Square with side= 2m
Surface area=side^2
Area : 2 [X^2][=] result is 4 m^2
Circle of radius r=3 cm
Area: Pi* 3[^2]=28.27 cm^2