Mathss
2006-11-09 1:48 am
A square us unscrubed in a circle of radius 7 cm. Find the area of the square
回答 (3)
2006-11-09 1:54 am
✔ 最佳答案
diagonal of the square = the diameter of the circleso diagonal of the square is 14cm
let the side of the square = x
By the Pythagoras theorem,
x²+x²=14²
x²=98
x=√98
the area of the square=x²=98cm²
2006-11-09 6:46 am
The radius of the circle is 7 cm .
The square length is 7cm ×2=14cm
So the area is 14cm ×14cm=196cm²
The square length is 7cm ×2=14cm
So the area is 14cm ×14cm=196cm²
2006-11-09 1:58 am
One side of the spuare=√7︿2+7︿2 (Pyth.thm)
=√98
The area of the square=√98*√98
=98cm︿2
*7︿2=7的2次方~
=√98
The area of the square=√98*√98
=98cm︿2
*7︿2=7的2次方~
收錄日期: 2021-04-12 22:52:52
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