Rectangular photo drame size30cminto40cm has a photograph mounted at the centre leaving a5 cm border all around .The area of the border is
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Answer:
325 sq cm
Step-by-step explanation:
area of rectangular frame = l × b
= 30 × 40
= 1200 sq cm. (1)
area of frame without borders
(30 - 5) × (40 - 5)
= 25 × 35
= 875 sq cm (2)
area of border = (1) - (2)
= 1200 - 875
= 325 sq cm
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