Math, asked by Anonymous, 3 months ago

9. The perimeter of a square is (4x+20)cm. What will be the length of its diagonal?

Answers

Answered by XxSavageMirchixX

Answer:

Draw a line BC parallel to AD

Draw a perpendicular line BE on DF

ABCD is a parallelogram.

BC=AD=25cm

CD=AB=60cm

CF=77-CD=17cm

For Δ BCF

perimeter of triangle=(25+26+17)/2

=68/2=34

By Heron's Formula of triangle=√s(s-a)(s-b)(s-c)

=√34(34-25)(34-26)(34-17)

=204cm²

Now area of ΔBCF=1/2xbase x height

=1/2 BExCF204cm²

=1/2x BEx17BE

=408/17

=24cm

Area of Trapezium =1/2(AB+DF)xBE

=1/2(60+77)x24

=1644cm²

Answered by kumarsurjeet2811535

Answer:

Unit 1(Introduction to HTML)

1. Which of the following is an attribute for font?

a.Size

b.text

c. align

d. type

2.Which tag is used to display the title of the web

page? a.<title> b. <head>

c. <body> d. <img >

3.which tag is used to make the text bold?

a.<i> b. <small> c.<b> d. <u>Unit 1(Introduction to

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