The surface area of the rectangular prism is 427 mm². The correct option is the second option 427 mm²
<h3>Calculating surface area</h3>
From the question, we are to calculate the surface area of the rectangular prism
Surface area of a rectangular prism can be calculated by using the formula,
Surface area = 2(lw + lh + wh)
Where l is the length
w is the width
and h is the height
In the given diagram,
l = 21.5 mm
w = 4 mm
h = 5 mm
Putting the parameters into the equation, we get
Surface area = 2(21.5×4 + 21.5×5 + 4×5)
Surface area = 2(86 + 107.5 + 20)
Surface area = 2 × 213.5
Surface area = 427 mm²
Hence, the surface area of the rectangular prism is 427 mm². The correct option is the second option 427 mm²
Learn more on Surface area here: brainly.com/question/1310421
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Answer:
4 x (7-x)
Step-by-step explanation:
4 times (multiply) the difference (subtraction) of 7 and a number (seeing as how you don't know that number use a variable, x)
Answer:
160
Step-by-step explanation:
This is the answer because:
1) Whenever there are two negative factors, the answer will be a positive
- x - = +
Hope this helps!
Answer:
<u>4</u><u>x</u><u>²</u><u> </u><u>-</u><u> </u><u>1</u><u>6</u><u>.</u>
Step-by-step explanation:
(2x-4)² =?
(2x-4)² = (2x)² - (4)²
= <u>4x² - 16.</u>
