Question

9. The area of a rectangle is equal to the area of a
parallelogram with base 28 cm and height 15 cm.
Ilength of the rectangle is 21 cm find its breadth.

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Answer 1

Given:

Area of rectangle = Area of parallelogram

Base of parallelogram (b) = 28cm

Height of parallelogram (h) = 15cm

Length of rectangle (l) = 21cm

To find:

Breadth of rectangle (B)

Formulas used:

Area of rectangle = length × breadth

Area of parallelogram = base × height

Solution:

Area of rectangle = Area of parallelogram

$\sf{\implies l \times B = b \times h}$

$\sf{\implies21\times B = 28 \times 15}$

$\sf{\implies B = \frac{28 \times 15}{21} }$

$\sf\boxed{\therefore B=20cm}$

Therefore, breadth of rectangle is 20cms.

______________________

@zaqwertyuioplm

Answer 2

HEYA,

the required measure is 20cm