Question
If the inradius of a triangle with a perimeter of 60cm
is 8 cm, then find the area of the triangle.(in cm2)Solution
Inradius =8cm Perimeter =60. Area of the triangle =inradius × semi-perimeter =8× (60/2) =8×30 =240 cm²
599, 631.9, 667.5, 707.5, 751.6, 800, 852.9
119, 200, 137, 182, 156, 164
20, 22, 47, 145, 585, 2920
99Â 124Â Â 160Â Â 209Â Â 273Â Â 355Â Â 454
Find the wrong number in the given number series.
1900, 1171, 669, 316, 100, - 25
Find the wrong number in the given number series.
45, 68, 39, 70, 27, 74
178, 184, 196, 216, 246, 286
13 Â Â Â 74 Â Â Â Â 355 Â Â Â Â Â 1416 Â Â Â Â Â 4245
109Â Â Â 106Â Â Â 101Â Â Â Â 94Â Â Â Â 86Â Â Â Â Â 74Â Â Â Â Â
...Find the wrong number in the given number series.
45,  54, 79, 128, 189,  330,  499