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Trava [24]
2 years ago
8

C) The area of a rectangle is 80 cm² and it is 8 m broad.In process

Mathematics
1 answer:
Nataly_w [17]2 years ago
3 0

Answer:

i) the length is 10cm

ii) the perimeter is 36 cm

Step-by-step explanation:

i) We know that Area of a rectangle can be found by using the following formula...

A = l x w

(where A is area of the triangle, l is the length of the triangle, and w is the width of the rectangle).

From this we know that

l = A/w

l = 80cm^{2} / 8cm = 10cm

ii) Now that we know both the length and the width we know we can find the perimeter by using the following formula...

P = 2(l + w)

P = 2(10cm+ 8cm )\\P = 20cm + 16cm\\P = 36cm

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Then, the age of the older sibling is x + 9.

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x = 23

Answer: 23 years old

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