plz answer all the questions
Answers
Answer:
Q7. 1080cm³
Q8. 750cm³
Q9. 28.5m³
Step-by-step explanation:
Q7.
PARAMETERS GIVEN,
RATIO OF LENGTH TO WIDTH TO HEIGHT = 4:5:2
LENGTH = 12cm
SO,
LET THE COMMON RATIO BE x
SO,
LENGTH = 4x
WIDTH = 5x
HEIGHT = 2x
SO,
LENGTH = 12cm
4x = 12cm
x = 3cm
SO,
WIDTH = 5x
= 5(3cm)
= 15cm
HEIGHT = 2x
= 2(3cm)
= 6cm
SO,
VOLUME = LENGTH*WIDTH*HEIGHT
= 12cm*15cm*6cm
= 1080cm³
Q8.
PARAMETERS GIVEN,
HEIGHT = 15cm
LET THE HEIGHT BE x
SO,
WIDTH = x/3
LENGTH = 2x/3
SO,
LENGTH = 2x/3
= (2*15cm)/3
= 10cm
WIDTH = x/3
= 5cm
SO,
VOLUME = LENGTH*WIDTH*HEIGHT
= 10cm*5cm*15cm
= 750cm³
Q9.
PARAMETERS GIVEN,
LENGTH = 3(1/2)m
BREADTH = 2(3/4)m
HEIGHT = 4m
SPACE FILLED WITH FOAM = 10m³
SO,
VOLUME OF THE BOX = LENGTH*BREADTH*HEIGHT
= (7/2)m * (11/4)m * 4m
= (7*11*4)/2*4 m³
= 38.5m³
SO,
SPACE LEFT = 38.5m³-10m³
= 28.5m³
I HOPE YOU UNDERSTOOD THE QUESTION!!!
!!!JAI SHREE KRISHNA!!!