Question

devansh white washed 3/7 part of wall of his room,his younger sister helped himand she white washed 3/10 part of that of wall.how much part of wall was white washed by both of them and what part of wall is still to be white washed?​

Answer 1

Answer:

342 m^2

Area to be whitewashed=Area of 4 walls -(Area of door+Area of window)

Area to be whitewashed=LSA-(l*b + l*b)

=2h(l+b) - ( 4*2 + 2*1)

=2*8(12+10) - (8+2)

=16 * 22 - 10

=352 - 10

=342 m^2

Answer 2

342^2 is your answer
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