Answer:
a ≥ 5
Step-by-step explanation:
the inequality symbol for at least is the greater than or equal to symbol because at least means that the number is as low as it goes.
so a is at least (≥) 5
The surface area of the rectangular prism is 2(lw + wh + lh). A rectangular prism has six rectangular faces.
<h3>What is the area of a rectangle?</h3>
The area of a rectangle with length and width is
Area = length × width
I.e., A = l × w sq. units
<h3>How to calculate the area of the rectangular prism?</h3>
A rectangular prism has six rectangular faces and the length 'l', width 'w', and height 'h'.
So, the areas of each face are as follows:
A(R1) = l × w
A(R2) = l × h
A(R3) = w × h
A(R4) = l × w
A(R5) = l × h
A(R6) = w × h
Thus, the area of the prism = sum of areas of all the faces
⇒ Area of the prism = lw + lh + wh + lw + lh + wh
⇒ A = 2lw + 2lh + 2wh
⇒ A = 2(lw + lh + wh)
Therefore, the area of the rectangular prism is A = 2(lw + lh + wh).
Learn more about the area of a rectangular prism here:
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<h3>
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We know that, Two angles are said to be complementary, if the sum of their measures is 90°.
<u>According to the Question</u>,
⇒ ∠ABD + ∠DBC = 90°
⇒ (2x + 30)° + (3x + 20)° = 90°
⇒ 2x + 30° + 3x + 20° = 90°
⇒ 5x + 50° = 90°
⇒ 5x = 90° - 50°
⇒ 5x = 40°
⇒ x = 40°/5
⇒ x = 8
<u>So</u>, <u>t</u><u>he measure of each angle will be</u>,
⇒ ∠ABD = (2x + 30)°
= 2 × 8 + 30°
= 16 + 30°
= 46°
⇒ ∠DBC = (3x + 20)°
= 3 × 8 + 30°
= 24 + 30°
<h3>
= 54° ▄▄▄▄▄▄▄▄▄▄▄▄▄▄</h3>
To get p add 18 on both side then you will get 56 as p which is the answer
