a picture is painted on a cardboard 8 cm and 5 cm wide such that there is a margin of 1.5 CM along each of its side find the total area of the margin
khushi290403:
Please mention the angle names properly otherwise the question is very easy !
Answers
Answered by
7
Answer:
30 cm sq
Step-by-step explanation:
total area =8*5=40
area of inner portion=(8-1.5-1.5)*(5-1.5-1.5)=10
needed area =40-10=30
Answered by
8
area 1 = lb
= 8×5
= 40cm²
After 1.5cm margin
l = 8 - (2×1.5) = 5cm
b = 5 - (2×1.5) = 2cm
new area = lb
= 5×2
= 10cm²
Area of margin = 40cm² - 10cm²
= 30cm²
= 8×5
= 40cm²
After 1.5cm margin
l = 8 - (2×1.5) = 5cm
b = 5 - (2×1.5) = 2cm
new area = lb
= 5×2
= 10cm²
Area of margin = 40cm² - 10cm²
= 30cm²
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