Mathematics: c) The area of a rectangle is 70 cm and it is 7 m broad. (i) Find its length (ii) Find its perimeter

c) The area of a rectangle is 70 cm and it is 7 m

Ответ:

rubes08

11.02.2022

34cm

Step-by-step explanation:

$Solution,\\\\Area=70cm^{2} \\\\Breadth(b)=7cm\\\\Now,\\\\Length=\frac{Area}{Breadth}\\\\Length=\frac{70cm^{2} }{7cm} \\\\Length=10cm\\\\Again,\\\\Perimeter=2(l+b)\\\\Perimeter=2(10cm+7cm)\\\\Perimeter=34cm$

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Ответ:

burritomadness

10.06.2021

Mathematics

I'm going to use the substitution method.

4x + 4y = -16
-8x - 6y = -20

4x + 4y = -16
- 4x - 4x

4y = -4x - 16

4 4 4

y = -x - 4

-8x - 6(-x - 4) = -20
-8x + 6x + 24 = -20
-2x + 24 = -20
- 24 - 24

-2x = 44

2 2

x = 22

4(22) + 4y = -16
88 + 4y = -16
- 88 - 88

4y = -104

4 4

y = -26

The answer is (22, -26).

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c) The area of a rectangle is 70 cm and it is 7 m broad. (i) Find its length (ii) Find its perimeter

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