Question

Whats the area and perimeter 4yd 5yd 3yd

Answer 1

Area =
`6 \ yd^2`; Perimeter = 12 yd

Explanation:

Given:

Sides given are 4yd, 5yd and 3 yd

let a = 4yd b = 5yd and c = 3yd

We need to find Area and Perimeter.

Perimeter can be found by adding all sides

Perimeter= sum of all sides =
`4yd+5yd+3yd = 12yd`

Area can be found using Hero's formula which states;

Area =
`√(s(s-a)(s-b)(s-c))`

where
`s= (a+b+c)/(2)=(4+5+3)/(2)=(12)/(2)=6yd`

Substituting the values of s and sides we get area as;

Area=
`√(6(6-4)(6-5)(6-3))= √(6*2*1*3)=√(3*2*2*3)=3*2 = 6yd^2`

Hence, Area =
`6 \ yd^2`; Perimeter = 12 yd