Question

https://i.postimg.cc/ZYQwdTkM/IMG-7854-1.jpg

https://i.postimg.cc/pTGqkvmy/IMG-7853-1.jpg

https://i.postimg.cc/7Yptpqm2/IMG-7852-1.jpg

Answer 1

for the first one do you have any idea ?

Answer 2

and for the second any idea ?

Answer 3

no

Answer 4

there's one

volume of pyramid=(11*11*14)/3 cm^3= 1694/3 cm^3
volume of cube=4*4*4=64 cm^3

Answer 5

ok and how you can use this details what you ve got and wrote above bc. i think this is the key to solve this first one

Answer 6

try dividing the volum of pyramid by the volum of cube

Answer 7

number of cubes=9

Answer 8

yes i think this is the right answer on the first one

so second ?

Answer 9

Yes as the corresponding sides are proportional.
and all the angles are of 90 degree

Answer 10

try drawn these rectangles

Answer 11

will understand more easy better

Answer 12

sorry the right side of rectangle 2 not is there but hope you understand it

Answer 13

so question A . are these rectangles similar ?

Answer 14

yes

Answer 15

yes why ?

Answer 16

do you know it ?

Answer 17

yes bc. the proportionality of sides is different by a factor q

ok. ?

Answer 18

do you understand ?

Answer 19

rectangle 1 - proportionality of sides is s/t

retangle 2 - proportionality of sides is (s×q)/(t×q) = ?

Answer 20

simplify by q and you get same like rectangle 1 s/t

ok ?

Answer 21

question B.

Answer 22

first of all what is the primeter of rectangle 1 ?

Answer 23

note P1 = ?

Answer 24

P1 = 2s+2t

yes ?

Answer 25

so P1 = 2(s+t)

Answer 26

in case of second rectangle how you get the perimeter ?

Answer 27

note perimeter rectangle 2 let be P2

P2 = 2sq + 2tq

yes ?

Answer 28

yes

Answer 29

factoriz out the q and get

P2 = q(2s+2t) = q[2(s+t)] = q(P1) bc. P1 = 2(s+t)

Answer 30

bill do you understand all ?

Answer 31

yes and this is for B ?

Answer 32

yes sure

Answer 33

and for C. ?

Answer 34

area of rectangle 1 = ?

Answer 35

come please this will solve you

Answer 36

P1

Answer 37

no do you know formula for area of a rectangle ?

Answer 38

Area of Rec 1 = tq

Answer 39

no

how you get it ?

please formula for area of a retangle

Answer 40

bill you ve learned it ?

Answer 41

ok. area of a square = ?

Answer 42

courage i m here to help you

Answer 43

so area of a square = side time side

than area of a rectangle = ?

Answer 44

area of a square is side time side bc. a square has 4 sides equale

yes ?

so in case of a rectangle area equal side time side but just in the form of length time width


do you understand it now ?

Answer 45

so using these knowladge what will be area of rectangle 1 = ?

Answer 46

note it A1

Answer 47

it is known to be A1 by looking at the triangle, i was going to say that after realizing

Answer 48

bill what triangle there are rectangles in your exercise

Answer 49

i ve said above that area of a rectangle is length time width

so in case of rectangle 1 area A1 = ?

Answer 50

rectangle 1 has length s and width t so use these details please

Answer 51

4 times the area of Rec 1

Answer 52

bill sorry what is this ?

i ve said please write aea of rectangle 1 equal how many ?

Answer 53

sorry

it's 4

Answer 54

why 4 ? when given that rectangle 1 has length s and width t

Answer 55

please explain me how you get this 4

Answer 56

i'm sorry it's wrong because you see the area of rectangle is the product of the lengths of two sides

Answer 57

no i ve said area of rectangle is length time width

Answer 58

right but i thought the area of rectangle were included

Answer 59

the product of the lengths of two sides is area of a square bc. a square has 4 equal sides

ok. ?

Answer 60

so than now what will be area of rectangle 1 ?

Answer 61

A1 = length time width so s*t

yes ?

Answer 62

so easy

ok. ?

Answer 63

and now what will be area of rectangle 2 ?

Answer 64

you know that rectangle 2 has length sq and width tq

use these please

Answer 65

A2 = ?

Answer 66

than A1 = s*t

so A2 = ?

Answer 67

A2 = qq

Answer 68

wait

Answer 69

no where are s and t from there ?


so

A2 = sq*tq = s*t*q^2 = A1*q^2

Answer 70

that's right i had it wrong

Answer 71

but these all are understandably for you now sure ?

Answer 72

just about i had to adjust to figure it out most of this were hard for me to figure out

Answer 73

for C i had covered

Answer 74

ok. but i think i ve wrote understandably to you - yes ?

Answer 75

Thank you on those jhonny and sorry i wasted your time enough and there's a few more left i need help on and that's it

Answer 76

just about

Answer 77

in case of C just you need to know formula for area of a rectangle

Answer 78

ok. np. was my pleassure and anytime just tag me than i m here online

good luck

bye bye