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victus00 [196]
3 years ago
14

9. A rectangle has an area of 45m²

Mathematics
1 answer:
love history [14]3 years ago
6 0

Answer:

Lenght=3\,m

Product of length and width= 45

Step-by-step explanation:

The product of the length and width of the rectangle is called the area of the rectangle.

Area of the rectangle= 45\,m^2

Width=15\,m

Area of the rectangle= Length\times Width

    45=Length\times 15\\\\Length=\dfrac{45}{15}\\\\ Length=3\,m

The product of the Length and Width of the rectangle is :

=3\times15\\\\=45 m^2 i.e area of the rectangle.

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The sum of the two areas of two circles is the 80x square meters. Find the length of a radius of each circle of them is twice as
Alborosie

Answer:

r = 4m --- small circle

R =8m --- big circle

Step-by-step explanation:

Given

Area = 80\pi\ m^2 -- sum of areas

R = 2r

Required

The radius of the larger circle

Area is calculated as;

Area = \pi r^2

For the smaller circle, we have:

A_1 = \pi r^2

For the big, we have

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R =2 * 4

R =8m

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3 years ago
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