Find the surface area of this rectangular pyramid. 4.5 in 3 in 4 in 5 in
2 answers:
Answer:
The surface area is 31.75 inches
Explanation:
To find the area of a triangle, we use the formula , or <em>base · height ÷ 2</em>
Using this formula, we find that the area of the front and back triangles is 10
On the side triangles, the formula shows the area to be 6.75
The base, which has a width of 5 and a length of 3, is 15
Add the numbers together and you get a total surface area of 31.75 inches
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Answer:
8 -
Step-by-step explanation:
For this problem you have to use the 45-45-90 triangle theorem and 30-60-90 theorem.
For 45-45-90, the isosceles sides = 4, so the hypotenuse of the 30-60-90 triangle is 4 times 2, which is 8. If x is 8, then since y is the side across from the 60 angle, y is . Since this really can't be simplified after y is subtracted from x, the final answer is just 8 -
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