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2016-01-30T12:58:51+05:30

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16. area of the carpet is 8×5 = 40 m²
and area of the border = 12 m²
area without border = 28 m²
it is equal to (L -2W)(B - 2W)
A/q
(L -2W)(B - 2W) =28
⇒LB -16W -10W +4W² =28
⇒40 -16W -10W +4W² =28
⇒4W² -26W +12 =0
⇒2W² -13W +6 =0
⇒2W²- 12W -W +6 =0
⇒2W(W- 6) -1(W-6) =0
⇒(2W-1)(W-6)=0
W =0.5 m as 6m is more than the breadth
19.
area of the walls = 7560/30 = 252 m²
floor area = 1620/15 =108 m²
∴L×B = 108 m²
⇒B = 9 m
now area of four wall = 2LH + 2BH = 252
⇒2H (L +B ) =252
⇒H =252/42 = 6m
2 4 2
2016-01-30T13:22:42+05:30
Question SECONDARY SCHOOL MATH 5+3 PTS Question no 16 and 19 plz help its urgent by Khushi31 39 minutes ago Attachment to the question 267713 ASK FOR DETAILS FOLLOW REPORT ANSWERS Brainliac KNOW THE ANSWER? ADD IT HERE! Answers 1 Avatar of qais Qais Expert 16. area of the carpet is 8×5 = 40 m² and area of the border = 12 m² area without border = 28 m² it is equal to (L -2W)(B - 2W) A/q (L -2W)(B - 2W) =28 ⇒LB -16W -10W +4W² =28 ⇒40 -16W -10W +4W² =28 ⇒4W² -26W +12 =0 ⇒2W² -13W +6 =0 ⇒2W²- 12W -W +6 =0 ⇒2W(W- 6) -1(W-6) =0 ⇒(2W-1)(W-6)=0 ⇒W =0.5 m as 6m is more than the breadth 19. area of the walls = 7560/30 = 252 m² floor area = 1620/15 =108 m² ∴L×B = 108 m² ⇒B = 9 m now area of four wall = 2LH + 2BH = 252 ⇒2H (L +B ) =252 ⇒H =252/42 = 6m
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