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# Mark scheme wrong? watch

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1. So this is the mark scheme for a question i've been doing and I got the wrong answer. However, the problem i'm having is that i'm putting 0.5 * 4^2 * 1.1 (In radian mode) and i'm getting 7.129, not 8.8 like the mark scheme.
Am i doing something wrong?
2. (Original post by chapmouse)

So this is the mark scheme for a question i've been doing and I got the wrong answer. However, the problem i'm having is that i'm putting 0.5 * 4^2 * 1.1 (In radian mode) and i'm getting 7.129, not 8.8 like the mark scheme.
Am i doing something wrong?
I'm getting 8.8 with both degrees and radians mode.
3. Wow. i literally have no idea what i'm doing wrong
4. (Original post by chapmouse)

So this is the mark scheme for a question i've been doing and I got the wrong answer. However, the problem i'm having is that i'm putting 0.5 * 4^2 * 1.1 (In radian mode) and i'm getting 7.129, not 8.8 like the mark scheme.
Am i doing something wrong?
I'm afraid so. You don't know how to operate your calculator by the look of it. Radian mode does not affect this calculation as you are not using the trigonometric functions.

Type in 0.5 x 16 x 1.1. Ok now?
5. Degrees and radians have no effect on it as pi isn't involved or a trig function. 8.8 is the right ans.
6. Reset your calculator, no idea how you're not getting it.

Thanks
7. GOT IT. I was doing 0.5 * 4^2 * sin(1.1)
edit: the reason I thought a trig function was involved was because I was using sin
8. Must be 8.8 because 4 squared is 16, half of that is 8 and 8 elevens are 88

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9. (Original post by chapmouse)
GOT IT. I was doing 0.5 * 4^2 * sin(1.1)
That was unexpected!
10. (Original post by Mr M)
That was unexpected!
Confusion between the 2 parts of the question perhaps
11. (Original post by TenOfThem)
Confusion between the 2 parts of the question perhaps
this exactly

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