Question

Find the surface area of the composite solid. image below
A.
502 m2
B.
574 m2
C.
646 m2
D.
720 m2

Answer 1

@CGGURUMANJUNATH

Answer 2

do u know surface area formula for cuboid

Answer 3

nope

Answer 4

http://www.bbc.co.uk/bitesize/standard/maths_ii/measure/surface_comp_solids/revision/1/

Answer 5

oh, thanks, now i do. so do i just do that equation?

Answer 6

now can u tell me the formula for surface area formula for cuboid ?

Answer 7

yep S= 2 times (Length times Base + Length times Height + Base times Height) right?

Answer 8

this is what i got idk if it's right
2(9*8+9*7+8*7)=
2(72+63+56)=
2(191)=382

Answer 9

u are right !

Answer 10

but what about the top figure @blub2013 ?

Answer 11

i don't know how to solve that part :/

Answer 12

http://www.studyzone.org/mtestprep/math8/a/surfareatriprism7l.cfm

Answer 13

@blub2013

Answer 14

now can u tell me the formula for surface area formula for triangular prism ?

Answer 15

@blub2013

Answer 16

To find the surface area of a right triangular prism we must use this formula:

SA = wh + lw + lh + ls

The variables in this formula stand for:

Answer 17

sa=wh+lw+lh+ls

Answer 18

w = width
h = height
l = length
s = side

Answer 19

yes

Answer 20

i think it's all 720 m squared though for the answer of the problem am i incorrect?

Answer 21

sa=wh+lw+lh+ls
show me the sustitution

Answer 22

SA=8*6+9*8+9*6+9*10

Answer 23

@CGGURUMANJUNATH

Answer 24

good

Answer 25

now solve and add my other answer to this answer, am i correct?

Answer 26

so sa of prism is how much @blub2013 ?

Answer 27

yes

Answer 28

SA=8*6+9*8+9*6+9*10=?

Answer 29

SA=8*6+9*8+9*6+9*10=?
@blub2013

Answer 30

@CGGURUMANJUNATH i got 648 as an answer when i added my answers together, correct?

Answer 31

8*6+9*8+9*6+9*10=?

Answer 32

648

Answer 33

8*6+9*8+9*6+9*10=?

Answer 34

before i added it was 266

Answer 35

no

Answer 36

8*6+9*8+9*6+9*10

Answer 37

264

Answer 38

yes

Answer 39

now add them together?

Answer 40

264+382=?

Answer 41

=646

Answer 42

yes now you have to add both.

Answer 43

so which option is correct ?

Answer 44

c :3 your a lifesaver thanks for your help, think you can help me with another?

Answer 45

u got it :)

Answer 46

go ahead.

Answer 47

To decorate the area around the pool with flowers, your neighbor purchases conical urns of radius 1.5 ft and height 3 ft. How much soil must he buy to fill each urn?
a.
2.07 cu. ft per urn
c.
8.07 cu. ft per urn
b.
7.07 cu. ft per urn
d.
27.07 cu. ft per urn