If a and b represent the height and base of the triangular face, and h represents the length of its hypotenuse, and w represents the width or thickness of the prism, the surface area (A) is
.. A = ab +w*(a +b+ h)
Of course the area of each triangle is (1/2)ab, but there are two of them, so their total area is ab.
Put in the numbers and do the arithmetic. If you have a lot of them all specified in this way, a spreadsheet can make short work of it.
A = 5*12 +4*(5 +12 +13) = 160 . . . square inches
81/100 is the fraction 81 is the percent
Whatever the exponent is on ten is the amount of spaces the decimal moves.
8. 91.2
9. 6200
10. 6250
11. 8240
12. 304.32
13. 51.234
Substitute the value of the variable into the equation and simplify.
54
Answer:
<h2>25,75</h2>
Step-by-step explanation:
(35 + 40 + 12 + 16) : 4
= (75 + 28) : 4
= 103 : 4
= 25,75
