Question

@kx2bay can you help with theses

Answer 1

am here

Answer 2

k

Answer 3

for this one 203b_unit1testpart2.docx
d^2 = a^2 + b^2 this is Pythagorean theorem, can u find d=?

Answer 4

im not that good at the pythagorean theorem

Answer 5

never mind, u have a and b, find d using the above formula

Answer 6

ok

Answer 7

what does this ^ mean?

Answer 8

to the power

Answer 9

x^2 means x squared or x times x

Answer 10

\[d ^{2} = 6 ^{2} + 8^{2}\]
\[d ^{2} = 36 + 64 = 100\]
\[d = \sqrt{100} = 10\]

Answer 11

part B of the first question
Area of a triangle = half * base * height = (1/2)* 8* 6 = ?

Answer 12

oh ok now i know why my answer was wrong

Answer 13

Part C of first Q
Volume of prism = area of base * width of prism
= 24 * 12 = ?

Answer 14

so then b is 24 and c is 288

Answer 15

i dont think i got c right

Answer 16

part D of Q1
Surface area = area of the 2 triangles
+ area of the rectangular bottom
+ area of the rectangular side
+ area of the Sloping side
= (2*24) + (12*8) + (12*6) + 12*10) = ?

Answer 17

288 is right for the volume, why dont u think its right?

Answer 18

a=10 b=24 c=288 and d=336 right

Answer 19

i thought c was to high of a number to be right

Answer 20

excellent!

Answer 21

so the first paper is done

Answer 22

yep

Answer 23

Q2
a. height of smaller pyramid is 6, larger pyramid is 12, so the scale factor of the smaller pyramid = 6/12 = ?

Answer 24

Q2
b. ratio of areas of smaller to bigger pyramid = (1/2)^2 = 1/4
so in the smaller pyramid, the base is 4 times smaller than the larger pyramid, understand?

Answer 25

is this for the 2nd paper now

Answer 26

oh yes

Answer 27

yes i understand

Answer 28

what's a from Q2

Answer 29

this is a small test for u ;)

Answer 30

a is half 0.5

Answer 31

excellent! so u r following me :)

Answer 32

yes

Answer 33

for C
the volume ratio will be (1/2)^3 = 1/8
i.e. the volume of the smaller pyramid is 8 times smaller than the larger one

u get this part?

Answer 34

yes i do

Answer 35

can u answer D then ?

Answer 36

i will try

Answer 37

its very very easy

Answer 38

volume = what again?

Answer 39

hmmm

Answer 40

volume of small pyra = 400 and it is 8 times smaller than bigger pyra, what's the volume of bigger pyra?

Answer 41

3200?

Answer 42

excellent!

Answer 43

did u sweat?

Answer 44

but how did u get the 400

Answer 45

hahahhaaa, read your posted Q buddy :)

Answer 46

no

Answer 47

The height of one square pyramid is 6 m.
A similar pyramid has a height of 12 m.
The volume of the smaller pyramid is 400 m3
.

Answer 48

oh ok i get it now

Answer 49

ready to move on?

Answer 50

yes now to paper 3

Answer 51

3.a)
the center is ???
look at the equation and tell me what's after x and what's after y ? this will be the centre but need to change the sign, i.e. if + then - and if - then +
ok?

Answer 52

ok

Answer 53

so what are the coordinates of the centre?
write them down as a par (x, y)

Answer 54

typo
...down as a PAIR (x, y)...

Answer 55

how do i find it

Answer 56

what's the equation of the circle given in the posted question?

Answer 57

(x-4)^2 + (y+2)^2 = 16
the centre is
(4, -2)

Answer 58

now B. the radius
that will be SQRT(160 = 4, right?

Answer 59

how did u find that

Answer 60

now C the drawing

Answer 61

typo above
SQRT(16) = 4 is the radius

Answer 62

ok I have to go now,
can I ?

Answer 63

@melonhead23
can i leave u now?

Answer 64

so the draw is c
can you help me tomorrow

Answer 65

thank you so much

Answer 66

the drawing is C

Not sure about tomorrow
YW