2 answer
Let x be weight of the baby
142=78+69-2x
142=147-2x
147-142 =2x
5=2x
2.5 = x
The surface area will be equal to option B which is 1008 square centimeters.
<h3>What is surface area?</h3>
The space occupied by any two-dimensional figure in a plane is called the area. The area of the outer surface of any body is called the surface area.
The surface area of the prism will be calculated as:-
SA = area of the three rectangular faces + area of the triangular faces
Area of the rectangular faces = ( 15 X 25 ) + ( 25 X 12 ) + ( 25 X 9 )
= 375 + 300 + 225
= 900 square cm
Area of the triangular 
= 
= √2916
= 64
Total area of the rectangular face = 2 x 54 = 108
So the total SA area of the prism will be = 900 + 108= 1008 square cm.
Therefore surface area will be equal to option B which is 1008 square centimeters.
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Answer:
120m^2
Step-by-step explanation:
24*10=240
240/2=120
Answer:
The length of a rectangle is twice the width. The number of square units in it's area is four times the number of units in it's perimeter.
Step-by-step explanation:
Applying the trapezium midsegment theorem, the length of XY is: 30.
<h3>What is the Trapezium Midsegment Theorem?</h3>
- Trapezium midsegment theorem states that the length of the median that joins two sides of a trapezium equals half the sum of he two bases of the trapezium.
Thus:
Let XY = x
WZ = 4/3(x)
DE = 35 (given)
Thus:
35 = 1/2(4/3x + x)
2(35) = 7x/3
70 = 7x/3
3(70) = 7x
210 = 7x
x = 30
x = XY = 30
Therefore, applying the trapezium midsegment theorem, the length of XY is: 30.
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