A student found the surface area of this pyramid. Surface area = (12)(6) + 1 2 (12)(8) + 1 2 (6)(9.5) = 72 + 48 + 28.5 = 148.5cm² What error did the student make? The student should have used the same value for all of the triangular faces. The student added only three of the five faces. The student did not use the correct formula to find the area of the triangular faces. The student did not find the correct area of the rectangular base.

The answer is, The student added only three of the five faces.

Step-by-step explanation:

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answer: the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.

step-by-step explanation:

the given rate of interest i= 85%

in calculating the monthly payment for a loan with an interest rate compounded monthly, the value of the interest rate per period we use in the formula must be in decimal form.

to convert it in decimal, we divide it by 100, we get

hence, the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.